Detail
Type Zk. - Hohlengraben is a Zinken (Outlying Farm).
A Freiburg - The Amtsbezirk for Hohlengraben is Freiburg. The Amtsbezirk is the District Office.
See Hinterstrass - A See notation means the entry is dependent on another entry. In this case, Hohlengraben is dependent on Hinterstrass, which should be consulted for additional information.