Both are also small. Like Carlos and Jenny in the story, children and their pets can squeeze into small passages. If your class lives in cave country, or travels in cave country, it is important to emphasize the danger that caves present. Children need to realize that if they find caves, they should not explore them by themselves. Even adults should not explore wild caves except in the company of trained cavers.
Procedure Show the class pictures of cave art from books, Internet, etc.
Blackboard as cave wall Invite students to draw one object on the cave wall. Trace children's hand prints in chalk, color in. Ask them to paint rock art on their stone. Invite students to contribute one piece to the cave wall. Same objects as above, but use brown finger paint or thick poster paint.