Long shadow is projected into the center of the cone. It almost look like a mere
10 feet or 3 meter deep hole, but this is only an illusion caused by the shadow.
In reality the depth of the cone is estimated 300'/100m. Alone the walk around the
cone took almost 20 minutes(!), the more that the trail appears not solid and is
very narrow. Lose gravel kept moving under my shoes with a strange high pitch noise.