back in time adventure

The moment you touch the strange, cool whorl, the voices you heard before get louder; you draw your hand back and glance at Ed but he doesn't look at all perturbed by the sounds. He says, "I'd better get Craig to help me with this. Would you mind keeping an eye on it for a minute until I come back?"
You agree and as soon as he leaves, you look into the dark drawer space to see what the object is that you felt. Painted on the wall in back of the drawer you can see what looks like an old, yellowed illustration of a desert landscape by an ocean. You touch the whorl lying at the back of the drawer, then gently wrap your right hand around it. The sounds of people talking get louder again and the picture of the desert gets bigger and whooshes toward you. Do you: