 The mountain is 3 @,@ 184 metres ( 10 @,@ 446 ft ) in height , with a prominence of 2 @,@ 187 metres ( 7 @,@ 175 ft ) and a saddle <unk> of <unk> metres ( 3 @,@ 271 ft ) . Mount Jackson and the Welch Mountains <unk> the central Black Coast , which is dissected by many inlets and is bounded on the west by <unk> Plateau of central Palmer Land , with elevation ranging between 2 @,@ 000 – 3 @,@ 000 metres ( 6 @,@ 600 – 9 @,@ 800 ft ) , and on the west side of the central Black Coast . The two mountains rise above the ice shelf with reliefs of about 1 @,@ 200 – 1 @,@ 500 metres ( 3 @,@ 900 – 4 @,@ 900 ft ) towards the east . They are interconnected by <unk> zones forming a plateau with steep snow slopes . The northern part of the mountain system , which extends over 1 @,@ 590 kilometres ( 990 mi ) , covers most of the Antarctic Peninsula , and Mount Jackson is its highest peak . 
