One Tree Cliff Island with Trial Chambers — Minecraft seed

One Tree Cliff Island with Trial Chambers is a Minecraft world (7557040174727706949) that spawns the player on top of a single grass-capped stone island at 0, 127, 0, surrounded by open ocean in every direction. The cliffs of One Tree Cliff Island drop almost vertically from about Y 130 to the sea at Y 63, and only a handful of trees grow on the plateau — but under that small island the world hides a skeleton dungeon, a deep dark cave with sculk sensors and a full set of trial chambers within 230 blocks of spawn.

One Tree Cliff Island: 8 Points of Interest Within 1,000 Blocks of Spawn

One Tree Cliff Island with Trial Chambers packs more underground content than most survival-island starts. All coordinates below were checked in a fresh world on Java 26.3:

• Spawn at 0, 127, 0 — the grassy summit of One Tree Cliff Island, plains biome, with the whole island visible from the edge.
• Lone oak tree at -44, 130, -24 — one of the few trees on One Tree Cliff Island; plant its saplings first, because wood is the scarcest resource here.
• Skeleton spawner at -48, 35, -10 — a dungeon with a chest inside the mineshaft tunnels under the island, about 90 blocks below the summit; an early XP and bone source.
• Deep dark cave at -46, -23, 14 — sculk directly below spawn with 14 sculk sensors, a sculk shrieker and 3 sculk catalysts, plus an amethyst geode next to it. Sneak here: the shrieker can summon a Warden.
• Trial chambers at -228, -24, 9 — under the deep ocean floor west of One Tree Cliff Island, spanning -317…-182 on X and Y -54…5; more than a dozen trial spawners and both regular and ominous vaults.
• Shipwreck at 208, 60, 80 — about 220 blocks east, with chest loot.
• Ocean monument at 352, 55, 272 — about 450 blocks south-east, for prismarine and sponges later in the game.
• Mushroom island at 736, 70, 696 — a separate mushroom fields island about 1,000 blocks away, where hostile mobs do not spawn on the surface.

One Tree Cliff Island: Java 26.1–26.3 and Bedrock Compatibility

One Tree Cliff Island with Trial Chambers was verified on Java 26.3, and the same island appears in published showcases for Java 26.1. Trial chambers require Minecraft 1.21 or later and the deep dark requires 1.19 or later, so older versions will not show the same underground. Java and Bedrock share terrain and biomes, so the island, the deep dark cave and the mushroom island match on Bedrock 26.10+, but structures generate differently: the trial chambers, dungeon, shipwreck and monument coordinates above are exact for Java only. On Bedrock use /locate structure trial_chambers to find the nearest trial chambers.

One Tree Cliff Island: Survival Plan for a Stone Island Start

• Save every sapling and use bones from the skeleton dungeon at -48, 35, -10 for bone meal — wood and food are the limits on One Tree Cliff Island, not stone.
• Dig straight down from spawn to reach the mineshaft and the dungeon without a boat.
• Clear the trial chambers at -228, -24, 9 for trial keys, a heavy core and wind charges before you start long sea trips.
• Build a boat early: the shipwreck, the ocean monument and the mushroom island are the next goals beyond One Tree Cliff Island.