This is a literal rock concert. #DadJoke. Sorry, when opportunity presents itself... 

Guitarist Grayson Erhard (formerly of Fort Collins) recently turned the Cave of the Winds in Manitou Springs, Colorado into a performance venue.

The Cave of the Winds is one of Colorado's most spectacular destinations, located near Pikes Peak. Most people sign up for tours, cave treks and other attractions, but if you're Grayson Erhard, you bring your acoustic guitar and do this:

Pretty sweet, right? Erhard has the song up for free download here.

Erhard has performed with Northern Colorado bands Aspen Hourglass and Pandas & People, and has taken the stage solo at Taste of Fort Collins, Cheyenne's Fridays in the Hynds concert series and, most recently, Cave of the Winds.