| USK | River rising in the Black Mountains (3) |
| BRECON | - Beacons; range of hills in southern Wales containing the Black Mountains and Pen y Fan (6) |
| DANUBE | A major European river, rising in the Black Forest and flowing 1,770 miles into the Black Sea (6) |
| NECKAR | German river rising in the Black Forest that joins the Rhine at Mannheim (6) |
| SAN | and 15dn, River rising in the Sierra Nevada that forms a large delta with the Sacramento River near Suisun Bay (3,7) |
| AIN | French river rising in the Jura mountains and flowing south to the Rhone (3) |
| LOT | Item(s) for sale at auction; or, a French river rising in the Cevennes (3) |
| TAY | River rising in the Grampians |
| BRIDGE | Go over Black Mountains |
| HATTERAIL | Black Mountains' ridge on Offa's Dyke path - halt later, perhaps (9) |
| MESAS | Arizona's Black Mountain and Colorado's Green Mountain, for two |
| SABLECOUGARMYSTIQUE | Aura surrounding a black mountain lion? [Mercury] |
| MONTENEGRO | "Black Mountain" country of E Europe (10) |
| SAAR | River rising in the Vosges Mountains that flows north to the Moselle River in Germany |
| ALLIER | French river rising in the Cevennes in the Massif Central to the Loire (6) |
| IRTYSH | Asian river rising in the Altai Mountains; chief tributary of the River Ob (6) |
| TAFF | Welsh river rising in the Brecon Beacons that flows into the River Severn estuary in Cardiff (4) |
| SAONE | River rising in the Vosges Mountains which joins the Rhone River at Lyon, France (5) |
| JOAQUIN | see 14dn, River rising in the Sierra Nevada that forms a large delta with the Sacramento River near Suisun Bay (3,7) |
| SUWANNEE | US river rising in the Okefenokee Swamp on the Georgia-Florida border that flows to the Gulf of Mexi |
