Valley of the Wind is the tenth level in Tolbrynd and features a new hazard called the Tornado.
The objective is to destroy 80% of the monuments.
Even the strongest and the heaviest machine will be easily flipped over by the tornado. An invertable small machine is recommended while it won't be affected much while falling from height or getting flipped.
Unless you're not up to a challenge then an aerial bomber is recommended.
The name Valley Of The Winds may be a reference to Nausicaa of The Valley Of The Winds.
You can use any cannon machine to destroy it while staying safe. You can also use very strong downforce, exactly the same mechanism used in The Frozen Path, to avoid the knock up. It works all the time.