how far is the cave? Is it within 500 ft of where we are? I can get myself and one other character there instantly if we do plan to fight.
From the edge of the pond, there is no direct line of sight the cave because it's on the other side of the escarpment/plateau/big frickin' rock in the picture I've shared twice.
We can say the cave is about 500 feet away from your "base camp" by the pond.
It's also elevated some 50 feet above the ground, with a narrow trail of steps switchbacking up the rock to it.