A bit of Googling suggests that most of their elevation data it is interpolated from a survey with 30 metre resolution frown

https://productforums.google.com/forum/#!topic/earth/3Th8MuHzKtE

https://www.quora.com/How-accurate-are-relative-elevations-in-Google-Earth


Edited by andy (08/01/2017 11:11)
_________________________
Remind me to change my signature to something more interesting someday