Cairn Gorm (Cairngorm) (Gaelic: An Càrn Gorm, meaning Blue or Green Hill) is a mountain in the Scottish Highlands overlooking Strathspey and the town of Aviemore. At 1245 metres (4084 ft) it is the sixth highest mountain in the United Kingdom. It has given its name to the whole range, although these hills are properly known as Am Monadh Ruadh (the Red Hills) rather than the Cairngorms. Cairn Gorm is the most prominent of the Cairngorm mountains in the view from Speyside, but it is not the highest. Much of the north-western slopes of the mountain are downhill skiing developments concentrated in Coire Cas. As well as ski tows, snow fences and bulldozed tracks, this corrie is also now home to a funicular railway. The next corrie south of Coire Cas, Coire an t-Sneachda, is separated from the skiing area by a ridge known as Fiacaill a' Choire Chais. The southern side of Cairn Gorm overlooks the remote loch known as Loch Avon (pronounced Loch A'an). There is an automated weather station (AWS) controlled by Heriot-Watt University on the summit of the mountain providing temperature and wind speed data. There is a separate AWS run by the Met Office (synop code 03065). The ski resort was developed on Cairn Gorm from 1960 onwards. It is the second largest in Scotland (after Glenshee) and acquired a reputation by many for the most reliable snow conditions. By the 1980s, thousands of skiers were using the resort on busy weekends, and the slopes could become very crowded. There was pressure Chairlift company and tourism interests to expand the resort to the west, but this was blocked by environmental objections both local and international. A series of milder winters than in previous decades commenced in the mid 1990s, a trend usually attributed to Global Warming, and skiing conditions suffered badly. Usage fell significantly, threatening the financial viability of the resort.