While the layers beneath the Earth’s crust are still full of great unknowns to humanity, a new discovery has recently been announced. Scientists explained that the diamond mined at the Karowe mine in Botswana indicates that there is a large amount of water even underground.
The diamond, which is emphasized as an extremely rare diamond, at a depth of about 660 kilometers appeared to occur. In the examinations performed on the diamond, there is a small defect known as ‘closure’.ringwooditeA high-pressure phase of magnesium silicate, called ”, and other aqueous minerals were found.
There may also be large bodies of water underground, but not quite in liquid form:

The mineral ringwoodite provided an important clue about the diamond and its substrate. Although the mineral is known to have formed at a depth of at least 660 kilometers, it was explained that for this reason the diamond could have formed at such a deep point. Aqueous minerals are at such a deep point. high level of hydration showed.
On the other hand, this water, which was thought to be underground, was not in the liquid and liquid form we know. This one, to other minerals in the mantle chemically bonded was in the building. Scientists explained that this could affect how the mantle melts. Likewise, it has been argued that water can influence the way volcanoes erupt and the seismicity of the Earth.
The clue about water hundreds of miles deep, for mobility in this region. There was a new tip. It was known that at this depth the mantle layers began to separate and seismic waves passing through the Earth mysteriously changed their speed. The liquid character could be an explanation for this speed change.
On the other hand, we have to wait a long time to give a clear answer to this question. Because nowadays it is not possible to go underground to hundreds of meters. The deepest point that we can descend naturally is 12 kilometers.