Overhead

This chasm stretches deep underground and it seems that it has no end. Moreover, it is carefully protected from outside interference. What secrets are hidden in it?
Nobody was able to reach the end. All sorts of methods and technologies were used, but everyone who tried, after several attempts, lost their last hope.
And here the main character comes into play - a seeker of adventures and difficult tasks. But in his inventory, there is only a parachute, which he can open or hide very quickly, but will that be enough?