You will spawn in a hole in the ground only a few blocks below surface. Turn quickly around and there will be a little surprise behind you.
The surprise is a dungeon with a mob spawner and a spawned zombie probably running towards you by now.
The chest doesn’t hold anything of particular interest. Just some coal, string and wheat. Good if you wanna make torches but that’s about it.
If you get back to spawn and up from the hole in the ground you will find yourself on the border of a flat landscape biome and a forest.
Seed: silent hill