Known hazards
- National Trust for Scotland: "Mar Lodge Estate is an exceptionally remote area, where you may not have GPS or mobile phone signal. Ensure you have the appropriate navigational skills and equipment before you set off."
- The boulder-strewn summit of the pass at about 833 m — slow, ankle-turning ground, worse under snow or cloud.
- Burn crossings on the southern approach, including the Luibeg Burn, which can rise fast in rain.
- No shelter and no quick escape from the middle of the pass; Corrour Bothy is the only building on the route.
- Winter snow, avalanche-prone flanking slopes and full mountaineering conditions from roughly November to April.
- Rapidly changing mountain weather — check the MWIS Cairngorms forecast, which is written as warnings.
- Park-wide fire byelaw, 1 April to 30 September: no open fires or barbecues, gas stoves only.
Leave No Trace
Small groups, no more than two or three nights in one spot, bury toilet waste away from water, carry out all litter, and use a stove rather than a fire.