Recently, the images taken by the Mars rover in the Galle crater found that there were soil samples similar to the earth's soil crack profile in the ancient soil in the Martian crater
These ancient Martian soil samples only show that Mars may have been warm and humid in the early days, when the environment was more livable than today.
 Usually, such soil exists in the Antarctic Dry Valley and the Atacama Desert in Chile, suggesting that there may be life on Mars in ancient times