Revealing: When Michael Douglas attempts to swing on a vine over a deep abyss, the (fake) rock that he runs into on the other side gives like a marshmallow.

Continuity: When Joan tries to cross the gorge on the decrepit bridge the distance of planks on this bridge differs largely, depending on the camera angle.

Continuity: When Jack and Joan finally get to Cartagena he gives her a necklace when they are at dinner. When he is holding the necklace in his hand it looks like a bead necklace. Then when he puts it on her it is a totally different kind of necklace.

Visible crew/equipment: In every shot where "the kid" is driving the red sports car, you can see that there is nobody in the car with him - Elaine should be in the passenger seat. Even slumped over unconscious, she'd be visible.

Continuity: Before Joan and Jack go down the waterfall in Ralph's car they are seen heading for the sliding roof to get out. In the next, wide shot a split second later they are hanging on to the sides.