When I was playing multiplayer, some guy (unfortunately I can't remember his nick) asked me to come to the airport VNLK for a challenge.
There's a small landing strip (grass) at about 7000-8000 ft, with beautiful scenery.. take off, take a little ride, and try to land! It's very very hard. you can manage to take off with a small jet (for example Airbus A320 or Boeing 737), but then you will have to use more than the rwy.
The interesting thing about the "airport" is that you can only land on one side, because on one of the sides there is a huge mountain wall (and on the other side a great valley, so there's only a small strip to land on).
Have it a go folks! Come back and comment about it 🙂
Captain
Chief Captain