If you happen to surprise a American marten, one of three things can happen. It may just stay there and watch you, run away or it may climb a tree. They are very good climbers and it's a great way to get away from the predators. In this case the marten went up a pine tree. I stayed put as it effortlessly climbed and looked toward me. Once it was certain that I was not coming any closer, it slowly came down and again kept looking toward me. One reaching the ground it then ran away.
Until next moment,
Amar