STG Lava is a merchant resource that can be used to make your own texture sets (Free/Commercial) and it comes with 30 seamless lava, magma and ash texture tiles saved as jpg, 1000 x 1000 px with 300 dpi.
The package includes aso the related bump and mormal maps.
Requirements: Any graphic program that can open .jpg files.
Renderosity
Where to buy:
https://www.renderosity.com/marketplace/products/115902/stg-lava
