The story goes back in time to the day of the picnic. Tom and Becky explored the cave with the group and played Hide and Seek until they got bored with it. They had read the graffiti on the wall. They wandered, not paying attention to where they were going. They mark their own names on the wall as well. Tom becomes interested in exploring an area they come across. He leaves some markings to show the direction they went. They see many interesting natural features. They startle some bats, and one puts out Becky's candle. The children flee to a passage that leads to a subterranean lake. Becky gets worried when she realizes they can't hear the others. Not wanting to encounter the bats, who may knock out their remaining candle, Tom proposes to take a different way back. They get lost. Tom c

