As you head deeper the trees very rapidly the trees begin to wither and die. You don't have to travel far before you can see the cause of the scraping a set of deer horns that are scraping across the ground they appear to be attached to a mound of dead vegetation shambling towards you with no haste about it you would think that it hasn't even noticed you, past the creature you can see what looks like a old hunting trail.
DC 13 to climb a dead tree? sounds a bit stiff but okay.
Athletics [roll0]
Ana chose a tree and point at one of them, "That one looks like it will collapse so no one pick that one." As she reached the top, she readied her bow.