How Do I Get In

Hint 1 of 16:

Finding the Olympus settlement at <2N 112W> isn't hard. Getting in is.

Hint 2 of 16:

T)alk to the gate guard, and get a note.

Hint 3 of 16:

This note must be signed by the three explorers, who are at Syrtis Major.

Hint 4 of 16:

To find the explorers, do the following:

Hint 5 of 16:

Cross the bridge north of Olympus.

Hint 6 of 16:

Follow the northern bank of the northern most canal westward.

Hint 7 of 16:

You should arrive at <10N 71E>, where the mine is.

Hint 8 of 16:

Dr. David Yellin should be outside of the mine.

Hint 9 of 16:

His comrades have been trapped in a cave-in!  You need to rescue them.

Hint 10 of 16:

Enter the house. See anything useful?