I generated an idealized walking path between two points using terrain data and r.drain.
I'm attempting to visualize the pathway that may have connected two sites occupied in antiquity.
However, humans are of course not machines, and I could be missing a completely different path around a mountainous terrain because its "cost" is slightly higher than the ideal path, however, a human pathfinder may be completely oblivious to the more efficient path because the time savings is relatively meaningless.
Is there a way to iterate paths? To generate, for example, all the paths that fall within +/-10% of the travel time of the ideal path?