Observed arrival · 2026-10-20
To the Other Side of the Earth (地球の裏側まで)
An interactive Japanese-language journey follows a 12,742-kilometre path from the ground in Japan, through Earth’s center, to the surface on the other side.
○Open
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✦Pretty
●Pro
◎Niche
◉Human
⚑Risk
ƒJS
- For
- Japanese readers exploring Earth’s subsurface
- Worth noticing
- The depth sequence runs from 10-centimetre earthworms and buried utilities to the 12,262-metre Kola borehole and Earth’s core.
Field notes
The sequence starts with soil life and street-level utilities, then moves through Tokyo examples such as the 42.3-metre-deep Roppongi station and a mammoth fossil found during subway construction. Farther down, it contrasts the 12,262-metre Kola borehole with a 7,906-metre scientific drilling record by the Chikyū research vessel. Related links branch into explainers on antipodes, Earth’s interior, and the limits of human drilling.
Observed signals
Read the marks
Editorial observations of this landing page, not a rating.
○OpenPublic substance visible
✦PrettyNotable craft visible
●ProPolished or operationally mature
◎NicheUnusually specific use
One card from the complete issue