Read the following passage:
"The morning mist had barely cleared from the valley when Dr. Aris paused beside the sandstone ledge. He brushed away a layer of dried pine needles, revealing the faint, circular indentation he had spent three winters searching for. It was smaller than the footprints described in the expedition's journals, but the deep pressure mark at the heel suggested the creature had been moving at a run. Taking a small brass caliper from his pocket, Aris measured the width across the toe impression, noting the measurements in his leather ledger before applying a thin coat of plaster. As he waited for the mixture to set in the cool air, he looked up at the gathering storm clouds, knowing he would have to work quickly. Only after the plaster had completely dried and was safely wrapped in canvas did he begin the steep climb back to the ridge camp, his pack heavy but his mind finally at ease."
Based on the passage, arrange the following events in the order they occurred, from first to last.
- 1Dr. Aris clears debris to reveal the circular footprint.
- 2Dr. Aris writes the footprint's dimensions in his leather ledger.
- 3Dr. Aris applies plaster to the footprint.
- 4Dr. Aris climbs back to the ridge camp with the wrapped plaster cast.