The Cog is a tool that can be found in Tomb Raider Anniversary in the Lost Valley. Lara will need three of those to set the Cog Wheel Mechanism in motion and lower the floodgate into the river to stop the waterfall from flowing.
Locations of the 3 Cogs
- The first cog lies in the cavern with the waterfall, on a stone step on the left.
- The second cog lies by a broken mechanism at the top end of the river.
- The third cog can be found beyond the valley, in a small temple just after the T-Rex fight.
- The equivalent in the original Tomb Raider