A green dome in a wet field in Heylipol, measuring 30 m in diameter and about 3 m maximum height. GPS is NL97050 43509. The dome has a central depression, and there appears to be a structure to it. The centre and east of the dome has a different vegetation with a lot of nettles and Rumex. There are the stony footings of a 10 x 5 m rectangular building to the east, which may be on the 1768 Turnbull map.