Kirk Hammett of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Fans cheer as Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
James Hetfield of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Kirk Hammett of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Mike Shinoda of Linkin Park performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Chester Bennington of Linkin Park performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Linkin Park performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Fans cheer as Sepultura performs on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Jim Thomson, left, is pushed by Carlinhos de Jesus as dancers perform at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Dancers and musicians perform at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees listen to music from the outdoor VIP area during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees wander the festival grounds during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Fans cheer for Sepultura at the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Zach Cooper of Coheed and Cambria plays on the Mercedes-Benz Evolution stage at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Fans cheer as Coheed and Cambria plays on the Mercedes-Benz Evolution stage at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Claudio Sanchez of Coheed and Cambria plays on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Zach Cooper of Coheed and Cambria plays on the Mercedes-Benz Evolution stage at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Claudio Sanchez of Coheed and Cambria plays on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees take a moment to relax during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees arrive for day 2 of the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees arrive for day 2 of the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
A man takes a photo from the outdoor VIP area during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Guitarist Steve Vai joins Sepultura on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Guitarist Steve Vai joins Sepultura on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Derrick Green of Sepultura performs on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
A woman on stilts walks through the festival grounds during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
The ferris wheel is seen during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees relax in the outdoor VIP area during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Fans cheer as Sepultura performs on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Derrick Green of Sepultura performs on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Sepultura performs on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Claudio Sanchez of Coheed and Cambria plays on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Travis Stever of Coheed and Cambria plays on the Mercedes-Benz Evolution stage at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees arrive for day 2 of the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees ride on the ferris wheel at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Jim Thomson, center, helps plays an instrument as dancers and musicians perform at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Noah Marogi buys a drink from a food vendor at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Rodney Munnings, aka DJ A+, performs at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
People pass by the Rock Street UK stage at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Samina Ocean, left, performs a fortune telling for Sandra Garibay at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees walk near the ferris wheel at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees relax during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Hollywood Undead performs at the main stage at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Derrick Green of Sepultura performs on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Andreas Kisser of Sepultura performs on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Guitarist Steve Vai joins Sepultura on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Samina Ocean, left, performs a fortune telling for Sandra Garibay at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees relax during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Attendees relax by the EDM stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Guitarist Steve Vai joins Sepultura on the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Guitarist Steve Vai joins Sepultura, including Andreas Kisser, on stageon the Mercedes-Benz Evolution stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
A woman on stilts walks through the festival grounds during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Chester Bennington of Linkin Park performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Dave Farrell of Linkin Park performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Chester Bennington, left, and Mike Shinoda of Linkin Park performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Chester Bennington of Linkin Park performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Chester Bennington of Linkin Park performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Chester Bennington of Linkin Park performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Concert technicians prepare the stage before Metallica plays at the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Lars Ulrich of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
James Hetfield of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Robert Trujillo of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
James Hetfield of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Kirk Hammett of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
James Hetfield of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Robert Trujillo, left, and James Hetfield of Metallica perform at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Kirk Hammett of Metallica performs at the main stage during the Rock in Rio USA music festival in Las Vegas on Saturday, May 9, 2015. (Chase Stevens/Las Vegas Review-Journal) Follow Chase Stevens on Twitter @csstevensphoto
Thousands of fans returned Saturday for the second day of the festival, the first of its kind in the United States.
Saturday’s musical feast featured more star power than Friday’s show, including guitarist Steve Vai (joining Sepultura), Coheed and Cambria, Linkin Park and Deftones.
Heavy metal giant Metallica hit the stage late Saturday night.
The festival, at Sahara Avenue and Las Vegas Boulevard, resumes next Friday with “Pop Weekend.”
