pull the final switch to fully activate the machine. Again, this is a gear puzzle in the Nintendo Wii game. Press Interact to examine the gear box and place the cog you found. Then rearrange the movable cogs so they connect the two larger cogs at the edges of the puzzle. Pull the switch to activate the machine. A cut scene shows the massive stone sluice gate being lowered into place, damming the stream above the falls. With the flow of water slowed, the passageway behind the waterfall is now accessible. CHECKPOINT 25 registers after the movie. Dive or jump into the pool but don't head for the exit yet. Instead get out of the water and climb the rocks above where you got the first cog (to the left of the falls when facing them). Climb the handholds and ledges to the top of the falls. Roll under the big wooden log and follow the path forward and around the corner to CHECKPOINT 26 (same as CHECKPOINT 2). UNDERWATER TUNNEL TO RELIC: Now that the stream isn't running quite so quickly, you can jump into the water and not be swept downstream. Find the underwater tunnel opposite the stairs near the checkpoint. (This screenshot shows the spot.) Swim through to a small room where you'll find a RELIC (2/8), the Kero Mug . NOTE: If the tunnel opening has bars across it, then you missed a switch earlier. Surface, swim downstream toward the sluice gate and climb out on