University Departments — Geography Mystery Cache

One of a series of geocaches, loosely based around the departments of the University of Cambridge.

The series was started by S&AT.

The given co-ordinates are those of the Geography Faculty. The cache is not there, but is within half a mile. Details of what you're looking for and a hint are in the checker.

I have had to move the cache from its original location. Please add 0.008 to your N and subtract 0.008 from your E before putting your numbers into the geochecker.

Analysis of the following caches should lead you to the solution.

Thanks to islalou, swampymonster, Beach Hut and Gareth McCaughan for feedback while I set this puzzle.