Saturday, May 14, 2011
Dendrochronology (tree ring dating) was used to determine that the cliff dwellings are more than 700 years old. Here's one of the areas where a sample was taken from one of the support beams.
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Dendrochronology (tree ring dating) was used to determine that the cliff dwellings are more than 700 years old. Here's one of the areas where a sample was taken from one of the support beams.
No comments:
Post a Comment