There aren’t a lot of questions you can ask a person from the future that aren’t going to screw up the timeline. “Will I be okay?” is kind of one of them.
There are a lot of great online comics that take a huge amount of real-life time to get the plot through a few complicated weeks. I’ve seen this gag in more than one of them.
If the trick is working like it’s supposed to, they should be standing in a narrow cylindrical hole with clear sky at the top. Maybe they should push hands and feet on the sides and try climbing. Might save some jumps at least.
Link appreciated! Wally, the day before that: “I’m going topside for a few hours to scope things out.”