An ancient monument in a field at East St. Colmac Farm, a mile (1.5 km) northeast of Ettrick Bay, the St. Colmac Cross most-likely represents a Bronze-Age standing stone which was re-purposed in the Early Christian Era, with an ornate cross of unusual design carved on one face. The stone stands 1.5m (5 feet) in height, is 0.5m (1½ feet) wide but part of the top is broken off, destroying the upper left section of the cross.
There was once chapel here, dedicated to St. Colmac, with an associated graveyard. The chapel seems to have remained in use until the end of the 16th C. but no trace of it now remains, its stone having been taken to construct farm buildings.