Yup, the pipeline is a hinderance to wildlife. There are fences and other obstacles that seperate the young from their parents. Hung in fence's, etc. Just off the top of my head. Nat'l Geog. did an article on it many years ago!
The entire pipeline is not above ground, high enough for a bear to walk on. Most likely they are walking on the heated parts that had to be re-done, when the oil wouldn't move through the icelands! That whole pipeline needs replaced!
PR