Generally, the installation of pipelines on hight slopes or very narrow edges has represented one of the greatest challenges in Onshore Pipeline projects. The logistics of getting there with steel tubes is one of the problems to overcome.
This leads to unusual solutions such as the use of special Cable Crane systems, making it possible to efficiently and profitably carry out this challenge.
Another extreme method that avoids construction on very steep slopes (where it is impossible to think of a construction with an open cut method), or when the impact to an environmentally protected area is impossible to consider, is the construction of vertical or sub-vertical tunnels (Raise Boring Method) and then install the pipeline inside. This method is complemented by a horizontal tunnel.