This seed spawns you in the swamp next to a set of extreme hills. Nearby underground you can find an abandoned mineshaft to explore. Then not too far away in the middle of a roofed forest, you can find a village. Start by turning around and going to the cave in the middle of the trees at -9 / 61 / 203.
Minecraft PC 1.11 Seed: 3859541787293284671
The Swamp Mineshaft
Go down into the cave and take the tunnel heading north. You’ll drop into an area with several directions you could go. Turn and head down the lower tunnel that goes back south. It will lead you around to another opening, and to the right, you’ll see wood and cobwebs.
This area is full of several tunnels of the abandoned mineshaft. Be warned, though! First off, this is also a ravine, so if you fall off the wooden walkways, you could die or get serious injuries. Secondly, there’s lava on the edge of one of the walkways. When I first came upon this mineshaft, the whole thing was on fire thanks to the lava, but it went out quickly.
Try exploring the mineshaft for yourself to see what all you can find. Usually, these hold several chest minecarts. See how many you can find! (Hint: there’s one at -4 / 30 / 207 to start you off).
The Roofed Forest Village
Once you’ve had fun romping through the mineshaft, you can go to the village to settle down and enjoy some food. To find it, head west straight into the roofed forest. You’ll find it in a tiny patch of clearing around -247 / 71 / 275.
This village has huts, a large house, two butcher shops, and lots of crop plots. Even though there aren’t that many interesting buildings, there still seems to be a variety of villagers that you can trade with for various items.
There is plenty more swamp and roofed forest to explore. See what else you can find around this seed!