Oleg

I found this place by accident when I launched a drone to take pictures of the surroundings.

Thanks for the suggested versions. So in the end this design served for gold mining?

Hello, Just wanted to ask you guys about trail which I found on the recent hike along the South Yuba River. This wooden trail located along the river and built on a cliffs and rocks. It looks like trail has several miles and some places is damaged. Just wondering if you know history about this trail and maybe do you have information or links to share with me? Pictures is attached below. Thank you.