Large rocks (8)
I believe the answer is:
boulders
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">large rocks</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 boulders that I've seen before include "Large pieces of rock worn smooth by weathering" , "Large smooth rocks" , "Large masses of rock" , "Large rounded rocks" , "Rocks larger than cobbles" .)