See also: Shared Solution for TIDAL 4 STA 13
This is a tidal mark like TIDAL 6 STA 13 nearby, but rather than a disk, it's a cross chiseled in an outcrop. This is quite unusual in my experience, so I was excited to look for this mark. After we found TIDAL 6, I walked across the shell- and seaweed-covered beach (which wasn't as slippery as it looked) toward the ledge. The cross is a bit difficult to spot, but it's about two feet south of a metal rod protruding from the ledge, so that should help to locate it. This mark may be difficult to reach at high tide!
Recovered in good condition as described in the 2010 recovery note.