Tired Hands Brewing Co.’s newest draft-only release is named after a legendary city in an unusual place.

Agartha is a 5.3 percent ABV brown stout brewed with rye and “copious amounts” of traditional English brown malts. The beer takes its name from the fabled city of Agartha, which is said to be located in the Earth’s core by believers in a hollow Earth.

According to a post on the Ardmore, Pa.-based brewery’s Instagram page, Agartha is now available at the Brew Café.