They get to the bottom of the tower and there's vultures around a goat/deer/Hare looking creature that is still alive. IDK if it's real or fake. It's being eaten alive so just skip ahead at 17.38 - when a character starts listing things they need for the climb. All you miss is the fact that the vultures waited for the creature to be half dead then ate it.
FURTHER - Spoilers -
Later in the movie someone kills a vulture to eat it. Around 1 hour 35 mins. Skip it, all you're missing is that she kills it and eats it.