| SENSOR | Motion detector used up by climbers taking in summit of Nuptse (6) |
| PILEITON | Stretch of uphill deviation periodically encountered near summit of Nuptse (4,2,2) |
| MOUNTETNA | Go up summits of Everest, Trivor, Nuptse and one of the most active volcanos in the world (5,4) |
| EYE | Light-detector used in Michelson-Morley experiment |
| ASDIC | Detector used once since detective docked |
| EARS | Sound detectors used in rehearsals (4) |
| ETRIER | Short rope ladder with a few rungs used by climbers (6) |
| KENDAL | _ Mint Cake, sweet used by climbers (6) |
| HEIGHT | Force gender change at the top in summit (6) |
| ASCENT | A track made by climbers (6) |
| ICEAXE | One article carried by climbers primarily? (3,3) |
| MUNROS | British mountains which might be "bagged" by climbers |
| CLEANS | Sponges found by climber heading to slopes (6) |
| MUTISM | Unwillingness to speak in summit, nervous (6) |
| BERGEN | Rucksack carried by climber, generally |
| BOTTOMGEAR | Say catchphrase over in pub that's used by climbers (6,4) |
| WAVE | A double-curve used up by the egocentric (4) |
| ALSATIANS | Satin, alas, used up by some big dogs (9) |
| OGEE | A double-curve used up by the egocentric (4) |
| PAGED | Space used up by editor is given a number (5) |
