Detail this asset from Unity Store: Original Link
This is a paid asset, but now you can download Hand Painted Forest Pack Free.
Hand Painted Forest Pack v1.5
NOTE If this download link require a key, please enter this key: DyV8GJbw92cXf_vcNgPW5cJ0hDSzwvdLFkVVTXAKcxY
(Update 1.6 for 2017.3.1 and up) Added a rigged character and new grass textures
New camera profile for added effects
(Update 1.5)Added prefab groups.
Static and collisions fixes.
Added grass textures compatible with unity terrain.
(Update 1.4) Added trees that are compatible with unity terrain tools!
(Update 1.3) Added mobile ready assets!
Compatible with unity 5!
Cliffs and props now use only one texture/material
Stylized assets to create your own fantasy forest environment.
New Trailer
Video walkthrough
Video walkthrough 2
Video walkthrough 3
Web demo(updated):
Web demo
Features:
Includes an example scene.
Models range from 60 to 1700 triangles.
Plants and trees models.
Cliffs and rocks models.
Waterfalls with particle effects.
Ruins, stairs and fences.
26 1024*1024 hand painted textures.