| SCAPA | ___ Flow (body of water in the Orkney Islands) |
| SCAPAFLOW | Large natural anchorage in the Orkney Islands named from Old Norse, 'bay of the long isthmus' (5,4) |
| OLDMANOFHOY | Sea stack in the Orkney Islands, first climbed in 1966 |
| FLOW | Expanse of sea in the Orkney Islands (5,4) |
| BRAE | Skara ---, Neolithic village in the Orkney Islands uncovered by a storm in 1850 (4) |
| SKARABRAE | Preserved Stone Age settlement site in the Orkney Islands, discovered in 1850 (5,4) |
| SKARA | Down Neolithic village in the Orkney Islands, NE Scotland (5,4) |
| KIRKWALL | Largest town in the Orkney Islands (8) |
| PENTLAND | ___ Firth, channel between the mainland of N. Scotland and the Orkney Islands (8) |
| PENTLANDFIRTH | Channel between the mainland of Scotland and the Orkney Islands (8,5) |
| HOY | One of the Orkney Islands |
| ORCADIAN | Native or inhabitant of the Orkney Islands |
| POMONA | Largest of the Orkney Islands |
| EDAY | Ninth largest of the Orkney Islands (4) |
| FIRTH | Channel between mainland Scotland and the Orkney Islands (8,5) |
| THURSO | Scottish town overlooking the Orkney Islands (6) |
| LATERAL | ____ flow test, means of assessing the presence of a substance in a liquid (7) |
| LAMINAR | ___ flow, non-turbulent motion in fluid dynamics, in which attributes such as velocity and pressure remain constant (7) |
| ORINOCO | '___ Flow', variety of iris sharing its name with Enya's debut hit (7) |
| ROOST | The --- is a powerful current caused by conflicting tides around the Orkney and Shetland Islands (5) |
