Sandy Grotto is a cave in the northern part of the island Stros M'Kai, Hammerfell in The Elder Scrolls Online. It's located not far from the Sandy Grotto Wayshrine. Inside are a stack of plunder and a dead man.
In a cave full of plunder, the Vestige found a dead man clutching a note to his sister. Though the bracelet accompanying the note has little monetary value, his sister may be glad to have it back.