Q: Where is the "face" on Mars located?
A: The so-called "face" on Mars is located in the Cydonia Mensae region at roughly 40.9 degrees North latitude and 9.45 degrees West longitude.
Q: How far is it between the MARS_BUST_1 and MARS_BUST_2 landing sites (or other features)?
A: The landing sites are 4,595 mi apart.