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The Enchanted Rock
Size:  (not chosen)
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Come visit the part of the Texas Hill Country and find an EarthCache.
The BiT Family at the top.
One of the spectacular views from the top.
Enchanted Rock is part of the Enchanted Rock State Natural Area that covers approximately 1,643 acres along Big Sandy Creek. Enchanted Rock is an enormous batholith. Batholiths are large bodies of igneous intrusive rock that forms from cooled magma deep in the Earth's crust. Batholiths are almost always made mostly of felsic or intermediate rock-types, such as granite, quartz monzonite, or diorite. Enchanted Rock is formed from pink granite that formed about 1,082+/-6 million years ago. The granite is a very hard natural igneous rock formation of visibly crystalline texture formed essentially of quartz and orthoclase or microcline.
Technically speaking, Enchanted Rock an exfoliation dome. An exfoliation dome is a dome-shaped hill typically with a bare rock surface, typically developed in massive coarse-grained rocks (like granites) by the process of exfoliation. Enchanted Rock is said to be the second-largest exfoliation dome in the United States, while the largest is in Georgia with a large carving of Confederate Soldiers.
Archaeological evidence date the earliest human visitation in the area to that of the Paleo-Indian time period (circa 11,000 year ago). Historic Native Americans claim that rock has magical and spiritual powers, hence the name Enchanted Rock. The Tonkawa, who inhabited the area in the 16th century, believed that ghost fires flickered at the top of the dome. In particular they heard unexplained creaking and groaning, which geologists attribute to the rock's night-time contraction after being heated by the sun during the day, this is part of the exfoliation and weathering processes.
To claim a find, please email me the answers to these questions below as well as upload a picture of yourself displaying your GPSr at the trailhead and at the top (Please do not post a find log without a picture).
Question 1: What is the amount of net elevation you hiked to arrive at the summit of Enchanted Rock? You have a nice piece of equipment in your hand that will assist you in this task. Mark a waypoint with your elevation at the lowest point (e. g., crossing Sandy Creek) and then mark another waypoint at the summit. Subtract your elevation to arrive at your answer.
Question 2: What name of the largest exfoliation dome, you know the one with the large carving of Confederate Soldiers east of Atlanta.
Question 3: What is the name of the peak to the east-south east of Enchanted Rock? You know the one named after a bird.
As of the date of approval there is $6 per day, per person 13 and older, staying or day use fee for the Enchanted Rock State Natural Area.
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Effective 05.16.07, all find logs MUST have accompanying pictures or they will be deleted.
This is a result of “armchair/desktop” EarthCaching attempts.
(No hints available.)
Last Updated: on 1/12/2018 12:49:06 PM (UTC-08:00) Pacific Time (US & Canada) (8:49 PM GMT)
Coordinates are in the WGS84 datum