Coastal Ruins

We have a problem: Tumlak can't swim, like many dwarves. And we don't have magical abilities that allow us to fly; so we must find a way to reach the farthest ruins, on the most difficult to reach rock.
Damp and slippery rock faces, thunderous waves crashing against the walls, sharp and perhaps poisonous shrubs.
A difficult challenge for us, but we need to reach those ruins