The whole article is very interesting but this!

"Twice a day, Earth’s crust rises and falls with the tides. Although we’re more familiar with ocean tides, the solid Earth experiences the same forces as our oceans. As the Sun and the Moon pull on Earth, the entire planet flexes and stretches. In some places, the surface of Earth rises and falls by as much as 40 centimeters."

https://eos.org/features/the-unsolved-mystery-of-the-earth-blobs?platform=hootsuite