Your team will need to memorise your location in relation to earth orbit.
To do this create a CTS video.
Step 1 : If you are on a PC or a MAC click here: Google Earth
Step 2: Enter the location for your fieldwork site.
Step 3: On a PC press Windows key + G and click the screen record option. Record as google earth vectors in to the fieldwork location from space.
Steo 4: Stop recording , save and share with your team to memorise.