These housemartins were nesting in the roof of the entrance. Most visitors were probably unaware being focused on the chapel ahead.
Simple QRP projects, 10m, 8m, 6m, 4m, FT8, 160m, WSPR, LF/MF, sub-9kHz, nanowaves and other random stuff, some not related to amateur radio.
I have to confess I have no idea where these are and the callsign does not help. In a short while I shall look them up. This is a QSL card....