Caterpillar (Death Valley, California)
The horn is in fact on the tail side of the animal (opposit from the head), and it is called an "anal horn".
It has been identified as being the Hyles lineata larva (The White-lined Sphinx moth).
Photos taken in Fall Canyon, a beautiful and very remote gorge in the heart of Death Valley.
For those who are familiar with this area, Fall Canyon is just North of Titus Canyon and it can only be traveled by foot. Several beautiful narrows are located in the first 4 miles of the canyon (starting from the mouth on the west side). The seemingly impassable cliff (a dry waterfall) 3 miles from the canyon mouth can be bypassed by an easy (albeit slightly exposed) trail on the south side (look for the kern about 30 yards before the fall). The best narrows are just above the cliff! Another similar cliff is located at about 7 miles. To get to Fall Canyon, park at the Titus Canyon parking area and hike north on the trail from about 3/4 miles, to the mouth of the canyon.
Photos taken in the Death Valley National Park.
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