I saw that back in 91 when I worked for the forest service in Avery ID. They had been seen before apparently earlier that spring, at that time two were full grown and 2 were spotted. When we saw them they were full grown. It was quite a sight. We came around a corner and they were sunning themselves in the road. They all slinked off and melted away. Made the hair stand up on my neck. Spooky. This is way back in the boonies, about 2 hours south of avery by steamboat and noseeum lakes.