The druid thumps his staff down onto the muddy ground and the vines that compose it begin to writhe, as do the roots that compose his "legs" and "feet." Before your eyes they extend and burrow into the ground, anchoring him, then start to grow and reach along the path and extending out a few feet over the edge. The vine tendrils stretch and crawl down the path, reaching and grasping, extending branching roots to anchor into the muddy earth as they go. It creates a stable-looking, wider walkway along the edge until they reach the opening on the other side. The vines burrow and anchor into the opposite side opening then grow still, their prodigious rapid growth finished. He turns to Weylan and the rest of the party "Nothing used to lair in this Elemental Earth nexus, there was no water mixing it and changing it to mud. What did you see below?"