The term 'HIGH-ELEVATION ENIGMA' can be solved by the four letter word 'YETI'. The YETI, also known as the Abominable Snowman, is a mythical creature said to inhabit the Himalayan region of Nepal and Tibet. It is described as an ape-like creature that stands between two and three meters tall and is covered in white fur. Reports of sightings of the YETI have been made since the 19th century, but no conclusive evidence has been found to prove its existence.