The minecraft seed for 1.0.0 called destroy is a massive snow biome. A huge network of abandoned mines lies beneath the snow.
This seed spawns you in a snow biome, theres a cave nearby with a dungeon in it at X: -1.5 Y: 26 Z: 80.
I also found a chest in an abandoned mineshaft that had a diamond in it at X: -296 Y: 28 Z: 287. The entrance leading to this cave is at X: -293 Z: 288. If you keep exploring the abandoned mineshaft there is a dungeon.