Across
- 2. Any vertical or nearly vertical rock exposure, usually formed by the processes of weathering and erosion.
- 4. tropical grasslands with scattered vegetation primarily located on the African continent.
- 6. northernmost of the Earth's two polar circles, north of which the sun appears above the horizon for 24 continuous hours at least once per year (and is therefore visible at midnight).
- 8. vast and treeless region located in the Arctic and subarctic regions of the world.
- 9. One of four main types of wetland. Accumulates deposits of dead plant material, especially mosses.
- 11. solid rock in the Earth's crust that underlies all soil and other loose material; the rock material that breaks down eventually to form soil.
- 12. geographical area that is remote, isolated, undeveloped, or difficult to access
- 13. boundary of a country or state.
Down
- 1. open-air mine from which rocks and minerals can be extracted.
- 2. A primary city or town of a country, state, or province.
- 3. Warm, dry wind along the eastern side of the Rocky Mountains in the United States and Canada. It can result in a rise in temperature of 20 °C (36 °F) in a quarter of an hour.
- 5. A bound collection of maps.
- 7. narrower than a canyon and the product of stream cutting erosion; usually very narrow and quite deep.
- 10. A mountain or hill.
- 11. isolated hill or mountain with steep sides.