Ice mines on Mars

Recently NASA scientists have said that there is a snow mine under the earth under Mars. This ice is part of a bigger part. Ice from 260 feet to 560 feet thick. Of which 50 percent is the mixture of ice and stone.
Manganese oxide was found in the Mars stone. The existence of manganese oxides proves that the atmosphere of the red planet in the past had a lot of oxygen. Because the level of manganese can not be formed if there is not enough water and oxidative processes in existence. There was a lot of water in the world at one stage of development. When the amount of oxygen in the atmosphere increases after the photosynthesis process, manganese levels begin to form. For this reason, it is thought that Manganese was created due to the presence of more oxygen in Mars.
However, in the prehistoric era, ice mines have been created due to snowfall. The portion of which is stored in ice is known only within the reach of the scientists. It's quite convenient to get a special cover. Scientists estimate, there was plenty of water on Mars at one time.