To get a rough idea of what forest tracks look like now where they haven't been used for rallying in years, or where I can't find onboards, I use a site called Geograph. People upload random photographs to fill the grid squares on the OS Map, so there's a lot of pictures of tracks and paths in random places in forests and on moors across the country, though some of the images are a few years years old.

For example, there's a remote part of Myherin with a water splash that hasn't been used on Rally GB at least since 2008 (https://www.rally-maps.com/Wales-Rally-GB-2008/Myherin), seen on this onboard @ 3m47s: https://youtu.be/ngVX0t7jXSg?t=227

Here's that spot on Geograph: https://www.geograph.org.uk/mapper/c...2.3999/-3.7708

It's a bit cumbersome to use, but useful particularly for getting a somewhat recent impression of the conditions on the ground for stages we see on maps used in the 80s and 90s. Red numbers are supposed to be more recent photos.