This Class I Pictish symbol stone stands inside the tiny Old Struan parish church, right by the altar.
The stone itself is a little over four feet tall and is decorated with two symbols. One, a double-disc-and-Z-rod is fairly clear; unfortunately some idiot with a magic marker tried to make it clearer still. The other symbol is on a damaged part of the slab and the top of the symbol is missing. As a result it cannot be identified with confidence, but to me it looks to be most like the flower/seal symbol.