Thunder Rock

This is probably the most difficult scenario after Rainbow Valley to complete, however there is a trick that can be used to make masses of cash quick.
The more advanced coaster types tend to come very quickly, so use them.
You should get the Vertical Coaster very quickly. Build one station at the top of the rock, maybe with a smallish lift hill, and dive down. Build a station at the bottom, and then connect up the bottom to the top with a chain lift. Unbelieveably, people pay as much for the lift up as they do for the drop down, and more often than not most guests get off the lift up extemely happy!