Skier's turn (8)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">skier's turn</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for telemark that I've seen before include "sudden turn on snow" , "Skiing manoeuvre" , "where hydro-plant destroyed" , "Meet Karl (anag) - turn in skiing" , "A turn made in skiing" .)