| TOBA | It's a lake in the Barisan Mountains of Sumatra in Indonesia |
| ACEH | Banda ___ (City in Sumatra in Indonesia) |
| AKAN | It's a lake in Japan that shares a name with a group of languages in Africa. (Which is simply a coincidence.) |
| ZAYSAN | It's a lake in eastern Kazakhstan that's at an elevation of more than 1,200 feet (366 meters). |
| RAINS | Wet season in Sumatra in summer? (5) |
| TRAINFARE | Charge for travelling through Sumatra, in Far East (5,4) |
| NESSIE | Nickname of a legendary beast said to inhabit the deep waters of a lake in the Scottish Highlands (6) |
| DERWENTWATER | A lake in the Lake District, immediately south of Keswick (12) |
| TARN | Thanks to the navy, we've found a lake in the mountains |
| LANDRAKE | This village in southeast Cornwall is near a lake in the back of beyond -- it's very well hidden (8) |
| RURAL | Ringleader, extremely unpopular, beside a lake in the country (5) |
| POTENTIAL | River dwelling, one with a lake, in the making |
| MATUTINAL | Pharaoh dips into sea and a lake in the morning (9) |
| LOCHNESS | A lake in the Great Glen (4,4) |
| DUCKPOND | Nothing less than a lake in the village? (4,4) |
| ARALSEA | A lake's in the region providing water (4,3) |
| MALACCA | Strait of ____ , body of water separating the Malay peninsula from the Indonesian island of Sumatra (7) |
| ORANGUTAN | Any of three species of Asian great apes found in rainforests on the Southeast Asian islands of Sumatra and Borneo. |
| RAT | "The Tale of the Giant ___ of Sumatra" (Firesign Theatre album) |
| DUMAI | Oil-rich city in Riau province on the island of Sumatra, Indonesia |
