For more detail this asset from the Unity Asset Store: Click Here
This is a paid asset, but now you can download Ultimate Lava for FREE, Please keep in mind this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Ultimate Lava v1.1
“If possible, please buy the package to support the developer”
This package contain 1 realistic procedural material with multiple adjustable parameters
Please read the “Read Me” text file to learn how to correctly use the asset.
Multiple variations possibilities
Extremely lightweight: weighing only a few kb (with no quality loss)
Parametric: you can tweak them directly within Unity using simple sliders, To create an infinite variation of your textures
Dynamic: animate them at runtime or make them interactive using Scripts. All platforms are supported