Indeed! This photo is of an extreme though not untypical donkey move. Years ago, before the 2nd. growth became too high to see over, there was a ridge with 7 "swing trees" on it visable from an old rr grade. A donkey or donkeys were skidded, in the manner shown, from the grade to the spar trees and the logs yarded to each tree by high lead. Then a skyline was rigged between the trees and the logs "swung" from tree to tree to a landing on the railroad. The railroad was on another ridge top and I guess this was cheaper than trying to build a spur. This was in an area SE of Aberdeen WA that I believe was logged by Northwestern Lumber Co.
In the 1970"s a logging co. on the West side of the Olympic Penninsula had a stand they wanted to log, and which could not be reached by road. They built a large sled like the one shown, mounted a diesel powered triple drum yarder on it, and skidded it across the Clearwater (I think) River with the mainline. After yarding the logs were skylined across the river. Sometimes newer is not better.