Information UM 50 x 40
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This petroglyph seems to contain a lot of messages; this is typical of most rock art. These are some of the least understood in the US as far as interpretation; unfortunately experts disagree on many of the meanings. Most agree that this art came from the Freemont period (500 AD), but little in terms of artifacts have been found to help refine and identify the time frame more accurately. It is in a narrow pass and most likely was a route used by many, in their migrations. It has been called the zipper glyph because of its most prominent feature, which looks like an open zipper.