Height: 666m/2,185ft
Grid Reference: NY471090
Ascents: 3
Boundary Stone at Adam Seat's summit, L for Lowther, landowner in Shap Rural parish to the north
Boundary Stone at Adam Seat's summit, H for Harrison, the landowner in Longsleddale parish
Sun 21 Sep 2014 - Harter Fell from Mardale Head
Mardale Head - Small Water - Nan Bield Pass - Harter Fell - Adam Seat - Gatescarth Pass - Mardale Head [4.25 miles 1,800ft ascent]
Wed 18 Feb 2004 - Harter Fell and Kentmere Pike from Longsleddale
Sadgill, Longsleddale - Wrengill Quarry - Adam Seat - Harter Fell - Kentmere Pike - Goat Scar - Shipman Knotts - Sadgill [8.50 miles 2,250ft ascent]
Sat 30 Mar 2002 - Mardale Head skyline
Mardale Head - Rough Crag - Caspel Gate Tarn - Long Stile - High Street - Mardale Ill Bell - Nan Bield Pass - Harter Fell - Adam Seat - Gatescarth Pass - Branstree - Selside Pike - Hare Shaw - Old Corpse Road - Haweswater lakeside path - Mardale Head [12.30 miles 3,415ft ascent]