Flynn climbed on the rock as well and looked down the hole. ''Geez... You could've broken your neck if you'd fallen. How deep do you think it goes?'' He picks up a small stone and drops it into the hole. 
....
....
....
...
*plock* ''Wow, okay. That's deep alright. Time to use the anti-gravs again I suppose.'' He pushed the button of the device and jumped down the hole.
After a while, Flynn finally lands on the floor of what seems a cavern. The only light is what comes through the hole. He looks up and shouts: ''Okay, it seems safe down here. Your turn!''