This year's Secret Solstice festival features a show that takes the concept of "underground" literally.

inside the Thrihnukagigur volcano
Credit: Patrick Rasenberg via / CC BY-NC 2.0

If you’re looking for a unique way to celebrate the summer solstice, head to Iceland to party inside a volcano. Organizers of Iceland’s Secret Solstice festival, which runs from June 16 to 19, are making sure that their unique event stays underground—literally. This year, they're throwing a concert inside a long-dormant volcano.

Guests will be flown from Reykjavík to the Thrihnukagigur volcano via helicopter. Once on the ground, they will step into an elevator that will descend 400 feet into the crust of the Earth. For a sense of how deep that is, picture the height of the Statue of Liberty—but underground. Once attendees arrive in the volcano’s magma chamber they will be treated to concert unlike any other in one of the world’s coolest underground wonders.

This isn’t the Secret Solstice festival’s first time hosting a concert in an unlikely location. Last year, they held a party inside a glacier, specifically within the ice caves that run underneath the Langjökull glacier.

The event organizers have not announced which brave artist will be playing the once-in-a-lifetime gig, but considering the festival’s line up includes such noteworthy acts as Radiohead and Of Monsters and Men, there’s little doubt it will be worth the cost of admission.

If you’re interested in attending, act quickly: there are only 20 tickets available for this remarkable experience, and those once-in-a-lifetime Instagram shots won’t come cheap. Tickets to the volcanic concert cost 250,000 Icelandic krona each (approx. $1970), but that includes the concert, helicopter transport from Reykjavík, refreshments, a VIP pass for the Secret Solstice 2016 festival, and all the bragging rights you can handle. Secret Solstice is definitely a music festival worth traveling for.

If you can’t make it to Iceland—or the tickets sell out—check out the concert series at Cumberland Caverns, Tennessee’s own version of an underground club, instead.