The term highland or upland is used to mean any mountainous region or elevated mountainous plateau. Generally speaking, upland (or uplands) means ranges of hills, typically up to 500-600m. Highland (or highlands) usually is used to mean ranges of low mountains.
- University of California Museum of Paleontology (1995 and later), upland, UCMP Glossary
- Montane Foragers: Asana and the South-Central Andean Archaic, ed. Mark S. Aldenderfer (Iowa City: University of Iowa Press, 1998), p. 2