STS9 have announced a two night stand at the famed Red Rocks Amphitheatre. It is billed as “Cave of Crystals,” and take place from September 7-8

“Join us as we fill this legendary space with sound, light, and wonder,” the band wrote on Instagram. “Our mission: create a cavern of dreams where we can explore new worlds and continue to discover what’s real & imagined.”

The jamtronica pioneers will be joined by What So Not and DJ Z-Trip on Friday, Sept. 7 and TAUK and Cut Chemist on Saturday, Sept. 8.

Presale, VIP and two-day passes are on sale now.

General onsale will start Friday April 13.

Click here for more information.