Scientists have analyzed data that have been successfully collected by the FREND neutron telescope aboard the Trace Gas Orbiter. FREND is intended for mapping the sources of neutron flux from the surface of Mars with high spatial resolution. Such sources are accumulations of hydrogen atoms in the near-surface layer of the Red Planet up to one meter deep, an example of hydrogen accumulation is water.
The amount of hydrogen found at the bottom of the valley in terms of water should correspond to the mass fraction in the substance of about 40 percent. This amount may be due to the presence of a huge glacier. In this case, the area of the glacier can reach 41 thousand square kilometers. However, only future Martian missions will be able to confirm this theory.