Rider of the lost ark? (4)
I believe the answer is:
noah
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">rider of the lost ark?</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for noah that I've seen before include "Biblical flood survivor" , "The first boatbuilder?" , "Oh, an ark man" , "zoo keeper" , "Biblical boat builder" .)