This feature continues to the west-northwest for a distance of 247 km, passing to the north of the crater Sumner.

This is a double-crater formation, with a younger, smaller impact crater, Harriot B, lying along the northeastern inner edge of an older and more eroded outer rim.

This interior feature has a well-defined rim edge, somewhat slumping inner walls, and a small central peak.

The outer rim of Harriot is worn and eroded with edges that have become softened and rounded after a history of impacts nearby.

[1] By convention these features are identified on lunar maps by placing the letter on the side of the crater midpoint that is closest to Harriot.