Thursday, September 22, 2011

Hole in the Rock

Most people familiar with Papago Park's Hole in the Rock think instantly of this view as you approach from behind the rock.
 I went up around noon on the 21st to see if there was any equinox shadows or somthing that might indicate early inhabitants used this area as a marker.
As one approaches from the rear, the other hole in the rock is visible.  The upper hole. As I walked up I noticed the moon was at a level where it could be seen through the upper hole.
 Here is a closer view

Granted this photo was right about noon - maybe 5 after and kind of shows the point of the hole on a pointed rock sticking up.
So it MAY be an indicator, but the true half-way point of the sun is not at noon on this day.  Much closer to 1 or 1:30, but I couldn't be there then. 
An interesting possibility is the line of the rock shadow closing in on the change in rock at the base.  Will have to see if I can get out there another time and see what happens.

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