Mountains of the world (2002)

Shows the location of mountain land estimated from a digital elevation model using criteria based on elevation alone (upper three classes: greater 2 500 metres) and at lower elevation, on a combination of elevation, slope and local elevation range. Definitions: 1. elevation >= 4500 meters 2. elevation < 4500 & elevation >= 3500 3. elevation < 3500 & elevation >= 2500 4. elevation < 2500 & elevation >= 1500 & slope > 2 degree 5. elevation < 1500 & elevation >= 1000 & slope >= 5 degree OR elevation < 1500 & elevation >= 1000 & local (7 km radius) elevation range > 300 meters 6. elevation < 1000 & elevation >= 300 & local (7 km radius) elevation range > 300 meters 7. Inner isolated areas (<= 25 sq.km in size) that do not meet criteria but surrounded with mountains