You spawn by water by a roofed forest but then theres a underground ravine with a huge cave system with many many resources!! :
Seed Code: 17
X: -50 / Y: 63 / Z: 375
Huge cave system and underground ravine connecting to the big opening in the plains! :)
X: -35 / Y: 33 / Z: 393
Huge underground ravine and cave system with many resources!