How do i get out of a cave like this?

I got in through a hole in the floor and past this there are no lift buckets and behind i cant jump up to get back, i only see this hole in the ceiling and i cant climb it how do i get out? https://steamuserimages-a.akamaihd.net/ugc/842590598988721326/86996557529B5E3B47F91EAF9FA3A7C885512274/