On one of my trips to Alert we were given the opportunity to over night at the cabin at Hazen Lake. The helicopter that was replacing the batteries on the HADCS line dropped 14 of us off there. 3 of us spotted this muskox and took off after him. We caught up to him at the bottom of a ravine. He slowly wandered up the other side of the ravine and went over the top. When we thought it was safe we crossed over and climbed up the other side but he had disappeared.