world seed: 1233313315812574635

spawn point: (0, 70, 0)
https://www.chunkbase.com/apps/seed-map#seed=1233313315812574635&platform=bedrock_26_0&dimension=overworld&x=0&z=0&zoom=1.5

i was digging a hole near the river at (70, 60, 0), and i fell into an underground ocean at (60, 50, 0) and died.