Their mission was to discover if a Skye peak of jagged rock is in fact a Munro - a mountain over 3000ft - and which of its two tops is the highest.
The results should be known in a few days.
Knight's Peak is positioned on the aptly named Pinnacle Ridge in the Cuillin Mountains of Skye.
Graham Jackson, John Barnard and Myrddyn Phillips headed to the Hebridean isle to determine the height of Knight's Peak, a subsidiary of Sgurr nan Gillean.
The rocky peak is currently classed as a Munro top, and Ordnance Survey maps give its height as 915m - a fraction of an inch short of 3002ft.
The excursion had the blessing of the Scottish Mountaineering Club, which keeps the list of munros and subsidiary tops, and the Munro Society, which is open to people who have summited all 282 Munros.
The team reached the summit with the help of a professional climber and spent two hours recording data using GPS accurate to two inches, which will now be analysed.
Mr Phillips said: "It is our aim to survey Knight's Peak to determine an accurate height for the hill. This will probably be the most difficult mountain survey ever conducted in Britain."