Has anyone seen or heard of something like this? I've been to cablecam.org, most of the projects there are a bit large for trekking use. I was thinking of something light enough (non-motorized, hauled with e.g. a fishing reel) to use with a gopro or similar, using light static cord (say 4-5mm?). Have given it a shot with my climbing gear, but that's too heavy when trekking and not climbing (and was for an HV30 and fairly heavy rig anyway).

Suggestions, links? Even heavy fishing line could be doable (despite the stretch).

thanks!