China is drilling some of the world’s deepest holes in hunt for natural resources
https://edition.cnn.com/2023/07/21/china/china-second-superdeep-borehole-intl-hnk/index.html
The deepest point on land seems to be similar to the deepest point in the sea. while the deepest point on land is 12,262 meters in Kola Superdeep Borehole, the deepest point in the sea
is 12,376 meters in Z-44 Chayvo well.
But, according to the latest information, it reached 15000 meters.
