base village: 281, 65, -389 => (35, 8, 48)
end portal: 1355, 24, 827
current nether roof portal: 1620, -, -2080
spider spawner: -164, 14, 48
skeleton spawner: -285, 49, 61
skeleton spawner: -256, 25, 181
mesa: -1388, -, 5128
sea temple: 250, -, 5000
corals: 250, -, 4500
gravel: -237, -, -750