Dragon Ball Z: Dragon Box

Season 1 | Episode 9 - Sorry, Robot-san -- The Desert of Vanishing Tears

Jun 28, 1989

Gohan falls through a hole that opens up in the desert, where he discovers a robot among some ancient ruins that had been buried by the sand. The robot tells him not to interrupt his sleep, but despite his resistance, Gohan wakes him several times. As the robot looks after Gohan, it begins to open up to him. However, as soon as Gohan starts digging through the sand to allow both of them to escape the ruins, the fragile ceiling starts to crumble.