The "N"otch seed (no ") has a natural spawned lava fall! :D I made this in one take so you can see it's legit!
Minecraft: Feed the Beast Modpack Review
MINECRAFT: Jurassic Park =]
Feed The Beast - CoOp with Friends - Episode 2
Technic with Sips - Part 3 - Pumping for Mulch
Hardcore Minecraft: Episode 2 - AFK Ownage!
MoreCreeps and Weirdos - Mod Spotlight
Tekkit with Duncan - Part 11 - Black Gold!