Geological Chronicle
Promontorium Agarum is a raised mountainous headland on the near side of the Moon, situated along the southeastern border of Mare Crisium at 13.87° N, 65.73° E. The ridge extends up to 40 kilometers into the mare basin and spans a width of approximately 80 kilometers.
Astronomer Johannes Hevelius named the feature in 1647 as part of an effort to map lunar geography using terrestrial place names. He selected the Ancient Greek name of a promontory on the northern shore of the Sea of Azov, likely corresponding to the modern Berdiansk Spit or Fedotova Spit. Promontorium Agarum is one of only four lunar features that retain their 1647 Hevelius designations.