Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Natural Jungle Pack Free.
Natural Jungle Pack v1.1
Natural Jungle Pack has arrived with large number of useful jungle contents that are simply awesome.
Package contains a bunch of models and ready prefabs for quick use.
All models can be adjusted for any type of jungle environment. Textures are high resolution normal maps.
A Unity demo scene has been included.
Contact me at: firstname.lastname@example.org