PENDLETON â Officials with the Umatilla National Forest are warning visitors looking to adventure into the forest as spring begins to use caution or refrain from traveling on forest roads. Though snow is beginning to recede in the foothills of the Blue Mountains, most roads remain impassible due to snow or mud caused by the melting snowpack, a press release from the Umatilla National Forest said. âWe typically see incidents this time of year where families head up for the day, get stuck, and end up spending the night or making a very long hike out to look for help,â said Shane ...