GC1R7GG B09: Devils Postpile North (Traditional Cache) in British Columbia, Canada created by Hunttrekkers

This cache has been archived.

Skookum Bear: As the cache owner has not indicated that they have visited the cache location to replace it if it was missing, perform needed maintenance, or verify that it is still there within a reasonable amount of time, I am regretfully archiving the cache to clear it from the active cache database and open the area to new caching opportunities. If the cache owner would like to replace a cache at this location, please submit a new geocache listing and it will be reviewed under the current Geocaching guidelines.

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Skookum Bear
Community Volunteer Reviewer

GC1R7GG ▼

A cache by Hunttrekkers Message this owner

Hidden : 5/10/2009

Difficulty:

Terrain:

Size: Size: small (small)

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Geocache Description:

I grew up in central California near one of the most famous examples of columnar basalt in North America, The Devils Postpile (http://www.nps.gov/depo/). We have an impressive example of columnar basalt just East of Kamloops on Robbins Creek Road.

Columnar basalt forms during the cooling of a thick lava flow when joints or fractures form. The extensive fracture network that develops results in the formation of columns. These structures are often described as being predominantly hexagonal, but polygons with three to twelve or more sides are common. The size of the columns depends on the rate of cooling; very rapid cooling may result in very small (Basalt is a common volcanic rock. It is usually grey to black (ours has red and orange tints) and fine-grained due to rapid cooling of lava at the ground surface. It is a kind of Igneous rock (“fire formed”); one of the three main rock types (the others being sedimentary and metamorphic rock). Igneous rock is formed by magma (molten rock) being cooled and becoming solid.
The landform you see here is most likely a volcanic plug created when magma hardens within a vent on an active volcano. Erosion removes the surrounding rock and the resistant plug remains.
The most common uses for this rock are as aggregate in highway construction, railroad ballast, and tile. Basalt is also a major component of asphalt.
There are other examples of columnar basalt near Kamloops. Lone Butte is located on the southern Cariboo Plateau 13 km southeast of 100 Mile House. Spahats Falls, 10 km north of Clearwater (on the way to Wells Gray Provincial Park), tumbles over columnar basalt cliffs.
Robbins Creek Road can be accessed from Barnhartvale Road and that gives the shortest drive on a good quality dirt road. You can also get to it from the end of Dallas Road, East, as a dirt road continuation. Parking: N50 36.874, W 119 57.495

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Additional Hints (Decrypt)

Onfr bs n gerr

Decryption Key

A|B|C|D|E|F|G|H|I|J|K|L|M
-------------------------
N|O|P|Q|R|S|T|U|V|W|X|Y|Z

(letter above equals below, and vice versa)

This cache has been archived.

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B09: Devils Postpile North Traditional Cache

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