• end of road

      Towner, Ronald H.; Laboratory of Tree-Ring Research, Univ. of Arizona (2007-05-22)
    • f4 view west

      Towner, Ronald H.; Laboratory of Tree-Ring Research, Univ. of Arizona (2007-05-21)
    • f8 int wall3

      Towner, Ronald H.; Laboratory of Tree-Ring Research, Univ. of Arizona (2007-04-20)
    • fe4 view s

      Towner, Ronald H.; Laboratory of Tree-Ring Research, Univ. of Arizona (2007-04-20)
    • road end at f9

      Towner, Ronald H.; Laboratory of Tree-Ring Research, Univ. of Arizona (2007-05-21)