Am Buachaille is a sea stack, or vertical rock formation composed of Torridonian Sandstone, 1 mile (1.6 km) south-west of Sandwood Bay in the Scottish county of Sutherland. It lies at the tip of the Rubh' a Bhuachaille headland around 5 miles (8.0 km) north of Kinlochbervie.
The stack is 65 metres (213 ft) high and was first climbed in 1968 by the mountaineers Tom Patey, Ian Clough and John Cleare. At least four climbing routes are identified on Am Buachaille which is considered a "famous" sea stack climb and has been called the "most serious of 'the big three' Scottish stacks" and a "truly great stack". The easiest route is graded Hard Very Severe (HVS) and access to the stack involves a 30 metres (98 ft) swim at low tide.
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- Sandwood Bay is a beautiful beach shrouded in mystery, The Scotsman, 2010-07-13. Retrieved 2014-02-18.
- Sandwood Bay on walkhighlands.co.uk
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- Scottish sea stack Archived 2014-02-18 at Archive.today, Planet fear, 2005-10-10. Retrieved 2014-02-18.