| AMUDARYA | Largest river of Central Asia, forming much of the northern border of Afghanistan with Tajikistan, Uzbekistan and Turkmenistan (3,5) |
| IRAN | Neighbour of Afghanistan with a formal water-sharing treaty over the Helmand river, accusing Kabul of restrictions. (4) |
| AMU | ___ Darya (River of central Asia) |
| GLACIERS | Massive ice forms that once covered much of the Northern Hemisphere. |
| AGATHA | The Finns left Afghanistan with the mystery writer (6) |
| IRANIAN | Asian citizen, one arrested crossing western border of Afghanistan (7) |
| BRICK | An adobe or clinker of clay, such as any one of the flettons forming much of 20th-century London; or, a Delft vase, loaf of bread, old-fashioned mobile phone, piece of Lego or wooden toy block, thus s |
| SNAKE | River forming much of the Oregon-Idaho border |
| AMUR | River forming much of the Russia/China border (4) |
| TAMAR | River forming much of the border between Cornwall and Devon (5) |
| URAL | Russian mountain range forming much of the boundary between Asia and Europe. |
| KASHMIR | Region on the northern border of India and NE Pakistan (7) |
| URALMOUNTAINS | Physical feature forming much of the boundary between Europe and Asia |
| THECAUCASUS | Mountain range which runs along the northern borders of Georgia and Azerbaijan (3,8) |
| YALU | River of eastern Asia forming most of the natural boundary between China and North Korea (4) |
| PAMIR | Highland region of Tajikistan and Afghanistan from which several south-central Asian mountain ranges radiate, including the Hindu Kush and the Tian Shan. Its name refers to the grasslands of the easte |
| MASHHAD | ____, near the northern border, is Iran's second largest city |
| GLOMMA | Longest and largest river of Norway, whose tributaries include the Rena and Vorma (6) |
| POTOMACRIVER | Northern border of Dixie |
| RIOGRANDE | Northern border of Chihuahua |
