Washington: NASA has selected a new lunar research project that could help scientists investigate a possible underground cave beneath the Moon’s surface, opening another avenue for studying the lunar environment and future exploration sites.

The project, known as GIMLI, will focus on the Marius Hills region of the Moon, an area that contains a distinctive surface feature known as a lunar pit. Scientists believe such pits could provide access to larger underground structures formed by ancient volcanic activity.

The mission is designed to determine whether an underground lava tube or cave exists beneath the surface. Researchers plan to combine several scientific techniques rather than relying on a single measurement.

Radar observations could be used to investigate structures beneath the lunar surface, while seismic instruments may help detect vibrations and provide information about underground formations. Gravity measurements can also reveal differences in density below the surface.

Cameras will provide visual information about the terrain and could help scientists examine the interior of the pit or nearby structures.

Lunar lava tubes are believed to have formed when molten rock flowed through volcanic regions and the outer surface cooled and solidified. If the interior material later drained away, it could leave behind a long underground tunnel.

Such structures are scientifically interesting because they could preserve geological information from the Moon’s volcanic past.

They could also become important for future human exploration. Underground environments may offer natural protection from some of the harsh conditions found on the lunar surface, including extreme temperature changes and radiation.

The Moon’s surface is exposed to solar radiation and cosmic particles because it lacks the thick atmosphere and global magnetic field that protect Earth. A sufficiently stable underground structure could therefore provide a potentially useful environment for future exploration.

However, scientists still need to determine the actual size, structure and stability of the suspected cave before considering any future operational use.

The GIMLI project will initially focus on gathering scientific information rather than establishing a human base. Understanding the geological structure of the area is an essential first step.

The investigation could also help scientists learn more about the Moon’s geological history. Lava tubes and volcanic formations can preserve evidence of ancient activity that occurred billions of years ago.

Improved knowledge of underground lunar structures could influence the selection of future landing sites and exploration targets.

The project demonstrates how modern lunar exploration is moving beyond studying only the visible surface. Subsurface environments may contain important scientific information that cannot be obtained through ordinary surface observations.

NASA and its scientific partners are continuing to develop technologies capable of operating in challenging lunar environments. Future missions could use robotic systems to enter or explore underground structures if they are found to be accessible.

For now, scientists will focus on determining whether the suspected underground formation beneath Marius Hills is genuinely present and how it is connected to the visible lunar pit.

If the observations confirm a substantial cave or lava tube, the discovery could become an important milestone in lunar science and future exploration planning.