try putting in 10110101, and after you spawn turn 180 degrees and walk for a minute
another good map with deep caves (swear i saw exposed diamond blcks but burnt in lava before i got close) and good sized mountains is "CREEPERS" all caps without quotes. you spawn overlooking a cool valley.
For a map with a gigantic underground cave system use Cheepa as your seed choose biodomes and allow buildings it puts temples above ground and even treasure rooms below ground you will want ladders before entering caves as they go down to lava
World seed-404
It means the software "engine" that actually dictates how much land, water, mountains, caves, villages, etc, that a world needs.
i used that seed and found 5 dungeons in a mountain region under the mountains
no
No
You find them
No
no
mountains, caves, canons
Yes
The Jenolan Caves are in the Blue Mountains of New South Wales, Australia. They are close to the Blue Mountains cities of Lithgow and Katoomba.
yes - lots