A pool of lava.
A mechanism of water flowing into lava from just the right distance, creating a cobblestone tower when a piston opens and closes the block between the two fluids.
Lava can be used to create volcanoes in creative mode.
Lava in a swamp biome.
Lava in a forest
A lava bucket.
On fire in lava.
Minecraft: Pocket Edition with lava going down a ravine.
An aboveground Lava pool in a plains biome.
A player character standing in Lava while under the effect of Fire Resistance.
Lava in Java Edition.
Lava in Bedrock Edition.
Lava in the Nether