[...] and below this lies some 7 km (4.3 mi) of sediment, placing the rift floor some 8–11 km (5.0–6.8 mi) below the surface, the deepest continental rift on Earth.
> However, in May 2008, a new record for borehole length was established by the extended-reach drilling (ERD) well BD-04A, in the Al Shaheen oil field. It was drilled to 12,289 m (40,318 ft), with a record horizontal reach of 10,902 m (35,768 ft) in only 36 days.
Lake Peigneur was swallowed by a whirlpool like in an anime, in a sad drilling that took away entire boats. The salt geologic bubble under the lake can absorb gigantic volumes of water, and a drilling for the exploitation of petrol initiated the hole.
https://en.wikipedia.org/wiki/Lake_Baikal#Geography_and_hydr...
[...] and below this lies some 7 km (4.3 mi) of sediment, placing the rift floor some 8–11 km (5.0–6.8 mi) below the surface, the deepest continental rift on Earth.
https://www.explainxkcd.com/wiki/index.php/3266:_Holes
The Wikipedia page on borehole doesn’t mention Deep Water Horizon at all.
https://en.wikipedia.org/wiki/Al_Shaheen_Oil_Field
> However, in May 2008, a new record for borehole length was established by the extended-reach drilling (ERD) well BD-04A, in the Al Shaheen oil field. It was drilled to 12,289 m (40,318 ft), with a record horizontal reach of 10,902 m (35,768 ft) in only 36 days.
https://en.wikipedia.org/wiki/Lake_Peigneur
https://www.youtube.com/watch?v=H6Ma0SVjMHA
https://www.crazygames.com/game/motherload
Kola Superdeep Borehole is not massive. It's a small cylindrical hole in the ground: https://en.wikipedia.org/wiki/Kola_Superdeep_Borehole#/media...
Mponeng is a massive continuously commercially operating mine with 5k workers