The Bell-Shaped Quarries of the Judean Foothills, Israel

Zissu, B. and Kloner, A., "The Bell-Shaped Quarries of the Judean Foothills, Israel", Opera Ipogea. Rivista della Società Speleologica Italiana Commissione Nazionale Cavità Artificiali / Journal of Speleology in Artificial Cavities no. 2 (2014): 47-60.