Mostly underground near the bedrocks.
You can find lava underground.
1: go mining 2:find lava 3:profit
When you mine a block of stone, it turns into cobblestone that you can collect. Alternatively, cobblestone is generated naturally in the walls and floors of dungeons, and at places where lava rivers meet water springs.
Mostly, they can be found next to lava.
Diamond is usually found around lava flows.
Obsidian is created whenever water flows on top of still lava.
Yes, But it's very hard to find. Skype: Nerat200
Yes, bedrock will block lava.
If you dig down to around diamond level (0-12 blocks) and find your way into a cave, there should be an abundance of lava down in the caves. Above ground, dry/desert biomes can contain lava pools.
no
Lava can be found anywhere beneath sea level. Lava has been know to spawn on the surface in pools, though this is rare. However, lava seems to be much more common as you get closer to bedrock.
Obsidian is usually found in caves underground where flowing water hits still lava.