'Desert' elephants water at the foot of sheer rock cliffs in the seasonal Hoarusib River. A permanent spring rises close to Purros and flows into the Hoarusib, giving animals a vital watering place during the long dry season of this desolate land.'Desert' elephants may be a subspecies of the African elephant, which have adapted over hundreds of years to the peculiar ecological conditions of their harsh desert environment. Their characteristics include longer limbs, allowing them to move up to 70 km in a single day. They are rarely found in groups of more than eight. Purros