This pack is Epic MegaGrants Recipient.
Big lava environment library, rocks and lava rivers that support landscape splines and the Unreal water plugin: lakes, rivers, shallow water simulation live and baked. With that pack, you can easily build a volcanic interior or exterior map and simulate lava flow over the surface. It's perfect for dugeons and caves where lava emission can light whole rooms. All meshes are in nanite and non-nanite versions. Landscape height-blended material supports emission and nanite. Pack support nanite and non-nanite engine setup.
FAB link: https://www.fab.com/listings/154cf0a8-207c-4c5d-a667-60e80e32cfe1