Yeah, I'm lucky here that the snakes are all "friendly". They just like to eat slugs ;) But even if I had snakes I needed to be careful with I would still use these features but I would put them away from the main harvesting and walking areas.
As far as collecting wood I go to forests that are going to be torn down and built on. These development sites are a great way to get good material without hurting a site.
Thanks for the comment and I like the picture!