Indiana Jones and the Chambers of Terror Multi-Cache

You are sitting at your favourite desk in the library pouring over ancient manuscripts when there is a knock at the door and your butler hands you a crumpled envelope. You open it and read the letter inside.

"Oh no!", you exclaim. "This is dreadful. I do hope Hiram is ok".
You immediately leap into action, grab your diary and hat and head out the door.
"Well, I suppose if you want to be a good archaeologist, you gotta get out of the library."

On the flight down to Cuzco you get a chance to examine the map in greater detail.
Scrawled on the map is the following:

There are additional notes on the back of the map.

To any intrepid explorer:
1. Be sure to visit the Chamber of Enlightenment where you can watch the All-seeing Eye cast its gaze onto the sacrificial alter.
2. It is not recommended to venture into the mine during the winter months as the Lost River may be in flood.
3. Take plenty of lamps and notify your butler upon departure.
4. There is no need to go into the quicksand.