Boreholes more than 5,000 metres deep were used to construct models of the subterranean ecosystem
10,668m
Cruising altitude
of commercial jets
8,848m
Mt Everest
830m
Burj Khalifa
3,700m
The subterranean biosphere extends at least 5,000m below ground
Average
ocean depth
Guardian graphic
Boreholes more than 5,000 metres deep were used to construct models of the subterranean ecosystem
10,668m
Cruising altitude
of commercial jets
8,848m
Mt Everest
1,345m
830m
Ben Nevis
Burj Khalifa
3,700m
The subterranean biosphere extends at least 5,000m below ground
Average
ocean depth
Guardian graphic