According to the study of the remains of rivers spread over Mars, approximately three and a half billion years ago, the surface of the red planet was adaptable to liquid water. Researchers said that there are some very dense deposits of the river remains in the area of Mars in the region of Aeolis. They said that these deposits can be seen from satellite photos because there has been a process called 'Topographic Inversion', which has formed the shape of Tilanuma on the surface due to raging of the river.

With the help of high-resolution photographs and topographical data, Jackson School of Geosciences K. B. T. Cardenas and his colleagues in the US investigated the format and changes of river deposits.

Cardenas and colleagues conclude that similar falling and rising water levels in a large water body forced the formation of the paleo-valleys in their study area.

Cross-cutting relationships are observed at the valley-scale, indicating multiple episodes of water level fall and rise, each well over 50 meters, a similar scale to eustatic sea-level changes on Earth, researchers said.

The conclusion that such large water level fluctuations and coastline movements were recorded by these river deposits suggests some long-term stability in the controlling, downstream water body, which would not be expected from catastrophic hydrologic events, they said.

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