After devestating storms brought down 290,000 metres of trees in Bavaria in 1919, a specially-constructed narrow-gauge railway was built to enable the removal of the timber from the area. The wood itself was used in the construction of the line, as well as the construction of brake mountains, which used the weight of loaded wagons to pull empty wagons back up the hill.
This is the hardest scenario about which to provide information, as the railway only ran for three years and what's left of the line is a historic and walking route.
This is one of the only scenarios in Snowdonia where the player gets a building - to make the best use of all the wood they will remove, players get a lumber mill to burn the wood and convert it into coal.
Designed by Sebastian Bleasdale, this is the first Snowdonia scenario to be designed by someone other than Tony Boydell - the only other, at the time of writing, is The Trans-Australian Railway. The rules can be found on BGG here.