I m guessing it is just the name of the company. After fixing lunch we all headed to Wasilla once again for showers, laundry and groceries. We also learned that the dye has come in and we plan to resume our dye tests soon using the moulin originally used in our salt tests. It seems that the moulins we ve watched develop tend to form where there is an existing crack in the ice. There are lots of cracks all over the glacier but some of them open up to form long deep fissures called crevasses.
Crevasses can be over one hundred feet deep and several feet wide.
As a glacier flows the upper 100-150 feet of ice is more brittle than that below. Below this depth the ice is under much more pressure and deforms and flows plastically. Crevasses are one of the earliest structural features to form in a glacier and are found along the entire length from head to terminus. They often change size and shape as the glacier moves down the valley. They form perpendicular to the direction of stretching similar to cracks on a stretched rubber band.