Volcanic Biome

I'd really like a sub biome that spawns inside jungles that basically has a massive, dormant volcano. It could introduce a new wood type, Scorched wood which could be a new, dark gray wood that would allow more building blocks for the community. Then, it could introduce ash blocks with similar mechanics to sand and ash itself that could be used in composts or crafting a new fertilizer or a new recipe for bone meal that gives more since ash is a super fetlizier. Also, a new type of volcanic rock could be added that would fit the biome. Also, if wanted, the volcano would spit out ash that made the sky in the area gray and cloudy. I'd like this a lot