Indy rubbed his eyes before realizing what time it was when he looked at his watch. "Morning huh, why does it have to be morning." He said getting up. He put his pants back on and reached for his shirt. "Well, I guess we got to get you back home." he said buttoning up his shirt. 

"C'mon let's get you out the back before anyone sees you here. I'll see you in class," He kissed Shay goodbye and sent her on her way after he made sure no one was looking, then he proceeded to shower and prepare himself for another day of teaching. 

Indy made his way over to Stroud Hall in his teaching slacks with briefcase and fedora. He strolled down the hall over to room 113 watching some students dashing to their classes before they were marked tardy or absent. As he entered the classroom, he walked over to the blackboard, and wrote two words in large letters; FIELD WALKING, then moved to the podium and laid down his notebook. The walls of the room were lined with wooden cases containing neatly arranged displays of pottery shards, bone fragments, and a few skulls. A table next to the podium was stacked with books and field manuals, and behind it was the blackboard and a wall cluttered with pictographs from digs, which documented discoveries or detailed technical procedures. Indy had prepared yesterday after his classed by setting up the room for his lecture. 

He greeted the students, noticing the blond who always snapped her gum, the serious young men in wool suits and ties, and the girls in their sweaters with ponytails and ribbons in their hair. His eyes fell for a moment on a good-looking dark-haired girl who sat in the center of the front row. It was Shay. Of all the students, she was the one who most interested him, but she also kept him on edge. She spoke up often, too often, interrupting with a question or comment, or answering a question he posed to the class as if she were the only one present. But that wasn't the real reason he was wary of her. Her name was Shay Black, and she was the daughter of Dr. James Black, the head of the department and his boss.

He opened his notebook to the lesson he'd prepared a day before yesterday. "Archaeology is one profession where you can take jaunts in the countryside," he began, "and still be working. We even have a name for it. It's called field walking." 

Indy looked over the rows of bowed heads of students taking notes. He explained that field walking involved looking for deviations in the landscape. Slight undulations could indicate the remains of an ancient ditch or site of a medieval village. Change in the color of the soil or density of the vegetation was another indicator. If the boundary of a field shifted for no apparent reason or the shoreline of a body of water followed a peculiarly straight line, it might mean the presence of an ancient wall. 

"But field walking doesn't always produce results. Stonehenge for example. People have walked all over Stonehenge and the surrounding area and didn't see any changes in landscape because they were too close to them. Near the end of the war, a military airport was built a short distance from the ruins, and photographs taken by a squadron of Royal Air Force in the summer of 1921 revealed some surprising details. It was discovered that the grain in an area leading away from the monument grew in darker colors than the surrounding area. Yet, it was impossible to see from ground level," he said.

"Does anyone know what would cause this to happen?" he asked.