The Yellow Canyon Quest
John Richard (writer), Carlos Pino (artist)
Printed in Battle Action Force #472-#488 (May 19 - Sep 8, 1984) with 1 color page and 51 black & white pages. The 5th comic cover is also page 13.
Fox and Hare are sent to rescue a famous explorer and fellow countryman from a war-torn Central American country and end up going on a treasure hunt with him.