They don't get very far onto the sand before they'll be able to see that someone has built a wall blocking the way to the seaside. The Magelets, though, remember that ice slide from the swamp and will try something similar here - ice steps up one side of the wall and a slide down the other side.

While they're busy with that, though, they might not notice the Leever that bursts out of the sand and slides towards them.