A long time ago, in a galaxy far, far, away... there was a cache. This cache had one visitor, and then disappeared, likely washed out to sea.
Here's another one in the same area. About two hours roundtrip from the parking lot. Or two minutes with a landspeeder.
You are looking for an ammo can, which contains an otterbox. It's under some small rocks, which are behind a big rock, which is under a big sky.
Low (or lowish) tide is essential if you're hoofing it. Don't forget to bring your camera.
Oruvaq gur ovt ebpx.