This is the area I am really interested in. We have not one, but two tunnel/bunker entrances, one of them leading under the flag pole / house.
https://www.google.com/maps/place/18%C2%B017'52.0%22N+64%C2%B049'20.5%22W/@18.297787,-64.8229122,259m/data=!3m2!1e3!4b1!4m14!1m7!3m6!1s0x8c051168d7542dc5:0x110473b6198e7717!2sLittle+Saint+James!3b1!8m2!3d18.300278!4d-64.825556!3m5!1s0x0:0x0!7e2!8m2!3d18.2977874!4d-64.8223651