|Cac Carn Beag|
|Elevation||1,155 m (3,789 ft)|
|Prominence||c. 670 m|
|Parent peak||Ben Macdhui|
|Translation||Little loch of the noisy sound/Mountain of breasts (Gaelic)|
|Pronunciation||Scottish Gaelic: [peɲˈçiəxən]|
|Topo map||OS Landranger 44|
Technically, the English name is a misunderstanding, being named after Lochan na Gaire, the 'little loch of the noisy sound', a loch to be found in the mountain's northeast corrie. Today the lochan is popularly called Lochnagar too. The summit itself may be referred to as Cac Càrn Beag, meaning "small cairn of faeces" in Scottish Gaelic.
The mountain's principal feature is a north-facing corrie around which most of the subsidiary tops as well as the main peak sit. The mountain is a Munro and is popular with hillwalkers at all times of the year. The most common ascent route is from Glen Muick. Care should be taken on the summit in poor visibility: the plateau has few obvious features and has steep cliffs on its northern edge.
Lochnagar experiences an Alpine Tundra Climate, with freezing, snowy winters and cold summers. The nearest UK Met Office weather station is at Braemar 6.6 miles (10.6 km) northwest. The yearly temperature range is usually between −6.6 °C (20.1 °F) and 9.4 °C (48.9 °F), but it can be slightly warmer and colder. January has the highest average frosts, despite February nights being colder; January has an average of 26.9 frost days, compared with 24.3 in February. There is the risk of a frost at any time of the year, even in July and August, when each month averages 1 air frost every 10 years.
- Breast shaped hill
- Lochnagar crater: The site of the largest single mine of World War I, exploded at the beginning of the Battle of the Somme. Dug from a communication trench named "Lochnagar Street".
- "Cac Carn Beag (Lochnagar)". munromagic.com. Munro Magic. Retrieved 13 October 2013.