He does like the idea of tying a rope to the spike though. Perhaps he can cross that way? He actually doesn't mind shimming across ropes suspended over chasms. It seems like he's been doing that a lot.
Larimar sighs and looks back up the passageway he came from. The thought of shimming across ropes makes him think of his backpack again, sitting above ground in front of the hole he tried to climb down. If it weren't so high up in the previous chamber he might try to get out that way. Unfortunately he knows he has no way of reaching it currently.