thanks Casey thats useful re trestles, i'll see what there is available that fits that profile
, regarding vegetation, in this section i'm thinking more about the low stuff , sagebrush etc, than the trees . i have an older image of hangman's trestle and there seems to be much less sage than there is now
i suppose in general theres been less clearing , or perhaps fewer fires, whatever, on the older version for the route ' less is more' applies to plants and "more is more' applies to snow fences and trestles.
I note that out of Antonito there seem to be whole stretches of dirt ,problem is , most videos don't cover this section much as its probably deemed too uneventful , some of the C&T videos with a fixed camera on a gondola are handy , although quality is low from you tube and even on those theres been a lot editing.
the drone videos are also useful, so thanks to all who are taking these videos , invaluable to us folks half a planet away !