To get to the GZ you have a lengthy drive down the Elaho Mainline FSR. The road worsens the further in you go but you should be able to get here with a 2WD. A 4WD, SUV, or similar vehicle is suggested, but take care & you should be able to make it here with your regular 2WD.
Between 29,000 and 15,000 years ago, the most recent glacial period or ice age developed and is now referred to as the Fraser Glaciation. Ice accumulated on the mountain peaks slowly grew into large glaciers. Eventually they joined with other glaciers and formed ice sheets that filled the major valleys. Between 15,000 years before present and today, the climate began to warm and the ice sheets slowly melted and retreated. Lakes, streams and rivers formed from melting ice, and rivers transported glacial sediment to new locations. Rivers and streams are not only movers of water, but also of sediment. The water, as it flows over the channel bed, is able to mobilize sediment and transport it downstream.
Pot holes are cavities or holes which appear to have been drilled in the surrounding rocks by eddying currents of water-bearing stones, gravel and other diverse matter. The size varies from a few inches to several feet in depth and diameter. The most common occurrence is in shields, where there are ancient rocks (granite, gneiss) with different resistance to erosion. Pebbles fall in a small cavity and swirl making this cavity wider and deeper. The resulting friction eroding a "pothole," into the larger rock.
Shown are major outlets of Fraser Glaciation; the Nass River Valley (A), the Skeena River Valley-Dixon Entrance (B), the southern part of the Kitsumkalum Kitimat Trough (C), the Gardner Canal (D), and the Dean and Burke Channels (E)
- From the posted coordinates, look down to the Elaho River. You will see several pot holes. Describe the holes.
- How do you think these pot holes formed?
- What is your estimate the diameter of the largest pot holes you can see from the viewpoint?
- Please post a picture of your geocaching crew or personal item at the GZ.
There is no need to wait for me to OK your log. Please feel free to claim the smiley and message me your responses.
Source: https://watershed.ucdavis.edu/education/classes/files/content/flogs/BSSlotnick.pdf