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Bulldozer

A cache by meralgia (Adopted by Kurt Franke) Send Message to Owner Message this owner
Hidden : 12/3/2008
Difficulty:
1 out of 5
Terrain:
1.5 out of 5

Size: Size: other (other)

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Geocache Description:

This earth cache is located in the William O'Brien State Park at 16821 O'Brien Trail N., Marine-on-St. Croix, MN 55047. You will need a state park pass to access this earthcache.

There's a parking lot near the picnic shelters (when the road is open). The park map can be found here. Please be aware that there is a considerable hike to the cache in the Winter. You need to park at the Visitor's Center when the gate that goes under the highway is closed. It is about a 2-mile, round-trip hike to the earthcache. Definitely possible but not for the faint of heart or ill prepared.


To log this cache, please do the following:
1. Go to the above-listed coordinates. They will take you to the boulder and accompanying information sign at this site.

2. Answer the following questions:
a. What type of boulder is it?
b. How much does this boulder weigh?
c. How did this boulder get here?

I hope that you learned something new today! Email or message me your answers


Sandstone outcrops formed millions of years ago by inland seas are found along the St. Croix River. Glacial activity played a major role in developing the picturesque valley. As the huge glaciers lumbered south, they scoured the sandstone and deposited soil and rocks of various sizes. As large masses of ice melted, the tremendous volume of released water cut through the soft sandstone, creating the St. Croix River and landscaping the wide, boulder-strewn valley.

This immense boulder is an impressive sight to behold. Boulders that have been carried from their place of origin by a natural force are called "erratics". They generally have smooth, rounded surfaces due to the jostling and scraping that occurs during their journey. By looking at the composition of an erratic, we can sometimes tell its point of origin and learn something about the direction of it’s movement.

(information above was cited from http://www.dnr.state.mn.us/state_parks/william_obrien/narrative.html)
NOTE : Any logs containing the confirmation information will be deleted. Sorry.

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Coordinates are in the WGS84 datum

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