Basalt Vent

Ok, technically it's a volcano, but hear me out: it's smaller, and it is not dormant (it does have an open caldera of lava at the top), BUT it does not erupt or spew lava an any way. It is made of basalt and stone, and also two new blocks: scoria (which is essentially chunky red gravel), and pumice. These, as well as basalt, can be made into bricks, cracked bricks, chiseled bricks, and so on. Also, diamonds spawn a bit higher near volcanos, but still not on the surface or even really close to the surface. If all that doesn't sound cool, listen to what's on the inside: there is a cave mouth and it leads you to a labyrinth cave that is not really a cave but is randomly generated rooms put together like an underground base. This would be made of blocks from this update, as well as some nether blocks, because there is one room all of them have, and that is a nether portal room. The portal is almost complete (or very rarely complete but unlit). There is also some zombie piglins, hoglins, and striders here. In the chests in this dungeon you can find stuff you would normally only find in the nether, like nether quartz or nether warts. Blaze rods and netherite scraps can never be found here (so the players will still have to go to the nether). This lets the players get a taste of the nether (and some nether quartz for observers for basic farms) without actually going in just yet. Btw if I haven't already said the volcanos wouldn't be giant.