This line sees a route going from the north of London (Stanmore) and ending at Stratford in East London. More famous now due to it being the home of the 2012 London Olympics, and the Westfield Shopping Centre. 
The purpose of this route it to run from station-to-station, trying to stay true to the line, as if it was above ground. This obviously hits a snag around Canada Water and North Greenwich, where the route doubles back on itself to continue the journey to the next station.

Dôme de Neige des Écrins (4015m) is a mountain in the Massif des Écrins in the French Alps, located by the Barre des Écrins (4102m).

The route starts at the "green island" right in front of the maison du Parc National at 1880m (Le Pré de Madame Carle).

It crosses the Torrent du Glacier Noir and the Torrent du Glacier Blanc twice to reach the Refuge du Glacier Blanc (2520m).