Altitude: 2,600 to 6,000 feet (800 to 1,800 metres)
Precipitation: 20 to 70 inches (500 to 1,800 mm)
Cultivated land, grasslands and populated human settlements characterise this zone.
Altitude: 6,000 to 9,200 feet (1,800 to 2,800 metres)
Precipitation: 79 to 40 inches (2,000 to 1,000 mm)
The forest receives 6 feet of rain annually, supporting a variety of plants and wildlife. Clear nights can produce low temperatures.
Altitude: 9,200 to 13,200 feet (2,800 to 4,000 metres)
Precipitation: 51 to 21 inches (1,300 to 530mm)
This is a semi-alpine zone and is characterised by heath-like vegetation and has wild flowers in abundance. This area is populated by the unique Scenecio Tree.
Altitude: 13,200 to 16,500 feet (4,000 to 5,000 metres)
Precipitation: 10 inches (250 mm)
The Alpine Desert recievs very little water and therefore only light vegetation exists in this
zone. The temperature can vary extremely from 100 degrees during the day to below
freezing at night.
Altitude: 16,500 plus (over 5,000 metres)
Precipitation: under 4 inches (100 mm)
This environment is ice and rock. There is virtually no plant or animal life at this altitude.
The nights are extremely cold and the day's sun is very powerful. The oxygen level at this height is half of that at sea level.