"Thanks. It helps. Okay, here we go." He lifted his head. "Damn."
"What?"
"It still isn't clear. Do you have a pocket mirror?"
"I have a compact." She took it out of her bag with her free hand and tossed it to him. It rolled and Don had to grab to keep it from going over the edge. Alis gave a little shriek. Don was momentarily unnerved and had to put his head back on the ground. "Sorry," she said.
Don opened the compact and carefully transferred it to his right hand. He held it out beyond the edge and peered into it, focusing it on the end of the creek. "Now I've got it. The water isn't going off the edge!"
"It isn't? Then where is it going?"
"Down, of course, but it's as if it's going into a well, or a vertical tunnel, just short of the edge."
"Why? How?"
"I can't see too well, but that's my impression. Hold on now. I'm coming back." He inched away from the edge, then got up and brushed himself off. He returned her compact. "I guess you know where we go next."
"The other end of the creek?"