The Samurai X Cave was located in the Sea of Sand, built by Nya during the period when she was adventuring as Samurai X. Nya used it as a base and a storage facility for her armor, vehicles and other inventions. The cave is sited beneath the skeleton of a large, unknown creature and is the perfect hideout. On the skeleton, there is a discreet Samurai X symbol carved into the bones. When the symbol is touched, the mouth of the skeleton opens to reveal a staircase going down. Garmadon and Lloyd were the first to discover the cave’s existence.