Waterstained Note

Description
This note has been under the water for a long time and most of the words have been washed away. What is left reads: ...enius plan! If it is buried in... ...st pillar, opposite the riv... ...neath the skull of a mammoth... ...ash it! The only...

Location
The  can be found on the isle south of Scavenger's Berth. It is located on the west side of the isle near the shore as a very small paper roll.