A valley crossing is the crossing of an obstacle—such as a traffic route, a river, a valley or a strait—by an overhead power line. The style of crossing depends on the local conditions and regulations at the time the power line is constructed. Overhead line crossings can sometimes require extensive construction and can also have operational issues. In such cases, those in charge of construction should consider whether a crossing of the obstacle would be better accomplished by an underground or submarine cable.
In this adventure sports activity, a rope is tied across a river on the two river banks. The participants cross the river one-by-one.
Each participant is harnessed and the belay / safety rope is in the hands of the instructor. The participant is attached to the primary rope with the help of a carabineer - the participant is parallel to the rope. The participant then has to use his / her hands to pull himself / herself to the other end of the river. This activity also takes care of enhancing motor-skills as well as courage.