You can hear a demo (with a background sound behind) here: https://soundcloud.com/indiegamemodels/ambient-and-environment-sfx-pro-demo

The Ambient and Environment sound effects pack features 23 high quality SFX: Wind (looping), Rain (looping), Thunder, River (looping), falling trees and more!

Don't hesitate to check my other sound effects here: IndieGameModels Store

Do you want to optimize the performance of your game? Check this awesome plugin! Dynamic Lighting Portal System (+30 to 60% FPS increase)