Echo Grotto is a virtual reality experience that lets you explore unique and intricate cave systems using a range of caving gear and tools!Traverse underwater tunnels, huge open caverns, crystal caves, massive ravines, sulfur pools, deep pits, glow-worm lit grottos and much more!Echo Grotto uses subtle random generation to make every cave system feel unique, while still delivering amazing locations and deeply interconnected caves since every cavern and passage is handmade and uniquely