Lake Letsie
... that there are no trees around Lake Letsie, since its entire catchment area is above the tree line?
... that there are no trees around <b id="mwAsQ"><a href="./Lake_Letsie" id="mwAsU" rel="mw:WikiLink" title="Lake Letsie">Lake Letsie</a></b>, since its entire <a href="./Drainage_basin" id="mwAsY" rel="mw:WikiLink" title="Drainage basin">catchment area</a> is above the <a href="./Tree_line" id="mwAsc" rel="mw:WikiLink" title="Tree line">tree line</a>?