Clark Memorial Hut (the 'CIC Hut') - a purpose-built hut below the northern crags of Ben Nevis in Scotland. In the past, some shelters in Scotland were built in exposed locations at high elevation, often as part of military training exercises. However, and particularly following the 1971 Cairngorm Plateau Disaster, these were deliberately demolished because they were thought to pose dangers exceeding their benefits. Norway The Norwegian Trekking Association operates about 460 cabins mostly in the mountains and in forested areas, of which about 400 have lodgings. Many cabins are unstaffed and open all year, while the staffed cabins often are just open during summer. Poland In Poland most mountain shelters and huts are run by the Polish Tourist and Sightseeing Society, with some being privately owned. In the Polish mountains, there are about 100 shelters. Most mountain shelters offer multi-person rooms and refreshments. Polish mountain huts are obliged by their own regulations to allow overnight anyone who is not able to find any other place before sunset, but conditions may be spartan (e.g. a mattress in a hall or warm basement). Slovakia In Slovakia there is a dense network of mountain huts ("chata") in most mountain and forest regions, serving a culture of hiking. In the past they were managed by the official tourist union, but now are mostly in private hands. Official mountain huts are similar to guest houses and are run by full-time managers. In winter, some refuges are closed. United States There are many huts in the United States, for example in the Rocky Mountains, the Appalachian Mountains and other ranges. The High Huts of the White Mountains in New Hampshire are generally "full service" (cooks serve food) through summer and early fall, while some are open the rest of the year as self-service huts, at which hikers bring and prepare their own food. Canada The Alpine Club of Canada operates what it calls the "largest network of backcountry huts in North America." New Zealand The New Zealand Department of Conservation "manages a network of over 950 huts of all shapes and sizes." The Himalayas The mountains of Asia do not have a well-developed system of public mountain huts, although hiking, trekking and mountain climbing are common. In 2015, a competition was launched to design huts that could be located along trekking trails of Nepal. South Africa Many places in Africa have hiking huts but they