Luthal and Zook glance over the side of the cliff and see that it drops about 60 feet or so into a dry ravine. The walls of the cliff actually have many outcroppings and boulders piled on ledges and such, so climbing down shouldn't be too difficult for them even if they didn't use a rope. With a rope, the climb will be even easier.
Kolarred scouts the drop and determines that if he takes his armor off, the climb down and up the other side will be easy enough. With the armor he thinks he probably could still make it all right... but the thought of getting out of his armor for even an hour or so to let his body cool down is an enticing thought. Despite his strength and endurance... hiking for hours in full platemail is hot and stifling work.
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OOC: The climb down and up the other side is DC 5 if you use rope, DC 10 if you don't. If the group decides to each Take 10 on the Climb check, Luthal and Zook will make the climb easily regardless. For Kolarred, if he leaves his armor on his check is (([10] + 3 STR - 5 ACP = 8)), without armor he is (([10] + 3 STR = 13)). Thus if he leaves his armor on he needs to use a rope in order to Take 10 and be successful. Otherwise, he also can make the climb without problems.