I had to move the cache, now about 10 feet west. At 9:00 AM on
Father's Day 2010 the tree's shadow fell on the pohaku that hides
the cache. 
Kawanui Sunset
Na Pohaku o Hauwahine is a 12-acre promontory studded with
large, smooth stones upon which Hauwahine, another shape-shifting
goddess, supposedly loves to rest. She is the guardian of the
fishpond in the marsh, and long ago the Hawaiians left offerings
there for her, including the awa (kava) she so loved. In return,
Hauwahine ensured there was always abundant fish in the pond.
The nonprofit group Ahahui Malama i ka Lokahi, caretaker of the
site, is reviving the landscape with native trees and plants,
including koa, pili grass and mao hau hele (yellow hibiscus,
Hawaii's state flower).
Please take extreme care while you are here. This is a very
special place and a great deal of time and effort has gone into
making it what you see here today. There is no need to search in
any of the plants.
When you get to the area where the cache is hidden you will have
a great overview of the Marsh. So that you will have no trouble
finding it I will provide you with this hint: Under the pohaku ,
under the shadow of the lone tree at 9 AM on Father's Day 2010