The ice depot lost in Spain's mountains

The Cava de Don Miguel, hidden in the Serra de Mariola in eastern Spain, is more than just a quaint relic of the past. Constructed in the first half of the 18th century, it served as an ice depot, a vital resource for the community during summer’s hot months. Unfortunately, the ice wasn't subterranean or wholly excavated due to the limestone substrate. All the more interesting is that it's not encased in stone or hidden under earth, as one might expect from an ice depot.

Instead, it boasts a unique, otherworldly appearance with eight counterforts, each topped with a flat stone, surrounding the base of the 14.5-meter-diameter cave. The entrance is located at different levels, with two arched doorways and one flat one, each made from a single piece. Visitors approaching it from the PR-CV 370 small walk trail can see pieces of its exterior, with an inscription reading '.de. 1792' on an exterior stone. Note: The year in the inscription is adjusted for correctness.

Sources: Wikipedia, OpenStreetMap, Wikidata, Wikimedia Commons