Puzzle 16

Puzzle 16 is one of the mysteries in Islands of Insight.
==Hints==
*Consider locales abundant with waterfalls.
*The waterfall and temple description is literal, not metaphorical.
==Solution==
Journey to the temple at the Eastern side of Serene Deluge, housing the Shifting in Phase Enclave. Descend to the temple's base and navigate to the underwater structure. Resolve the submerged logic box, treating area numbers as viewpoint numbers and vice versa.