Not after a downpour. Not from a visible river. It simply appears from the side of the ancient crater wall and keeps flowing.
You can stand beside it, watch it, even put your hand into it — and still not see where it came from.
The answer lies beneath your feet.
To understand the water at Gomukh, you have to go back to the event that created Lonar itself.

Around 50,000 years ago, a meteorite travelling at enormous speed struck the basalt of the Deccan Plateau.
The impact was violent enough to excavate the Lonar crater, throw enormous quantities of rock into the air and fracture the ground around and beneath it.
The rock was not simply pushed aside.
It was shocked, broken, folded and rearranged.
Scientists studying Lonar have found several systems of fractures created by the impact — cracks that radiate outward from the crater, curves that follow the crater's shape and deeper fractures produced as the rock responded to the collision. The effects of the impact therefore extend far below the surface we see today.
And this is where the story of Gomukh begins.
Because those changes to the rock also changed the way water could move through it.

The crater is made largely of basalt, the dark volcanic rock that forms much of the Deccan Plateau.
But basalt is not simply one solid, waterproof mass.
Some layers are dense and hard.
Others are full of tiny cavities.
These cavity-filled rocks are called vesicular basalt.
The cavities formed long ago, when gases trapped inside molten lava escaped as the lava cooled. Imagine the difference between a solid brick and a sponge. The sponge has spaces inside it; water has more places to enter and move through.
Basalt can also become weathered over time. Water, air and chemical reactions gradually break down exposed rock, creating cracks and weaker zones that can allow groundwater to move more easily.

When the meteorite struck, fragments of rock were blasted out of the crater and deposited around it.
Geologists call this material ejecta.
Some of the ejecta landed close to the crater and is known as proximal ejecta.
Unlike a single solid slab of basalt, ejecta is made of broken pieces of rock packed together. That can make it a more favourable pathway for water.
So around Lonar, you have several different kinds of underground material:
porous basalt,
weathered basalt,
broken impact material,
dense basalt,
and fractures running through the rock.
Together, they create something remarkably similar to a natural plumbing system.

Think about rain falling on the landscape around Lonar.
Some of it runs away across the surface.
Some of it sinks into the ground.
Once underground, the water begins moving through whatever spaces the geology gives it.
It can move through the cavities in vesicular basalt.
It can travel through weathered and fractured rock.
It can move through the more permeable layers of ejecta.
But then it may encounter something very different: a thick layer of dense, massive basalt.
That rock is much less permeable.
Instead of continuing straight down, the groundwater may be forced to move sideways or along fractures in the rock.
This difference between more permeable and less permeable layers is one of the key features controlling groundwater movement around the Lonar crater. Researchers have found that springs occur along the inner crater walls where weathered vesicular basalt and/or nearby ejecta sit above thicker, less-permeable basalt.
And eventually, one of those underground pathways reaches the surface.
At Gomukh, we see it happen.

This is an important distinction.
The meteorite did not bring the water to Lonar.
And it did not create a hidden reservoir that has been flowing unchanged since the impact.
The water is part of the ordinary water cycle.
Rain falls.
Water enters the ground.
Groundwater moves through the landscape.
What is extraordinary about Lonar is the landscape through which that water moves.
The meteorite radically changed the structure of the rock.
The fractured and altered rock now helps determine where groundwater can travel.
And at certain points along the crater wall, that water emerges as a spring.
So the connection is not:
meteorite → water
It is:
meteorite → changed rock → changed groundwater pathways → springs.
That is a subtler story.
And a much more interesting one.

We usually think of Lonar as the crater we can see.
But there is another Lonar beneath it.
A hidden landscape of cavities, fractures, weathered rock and ancient impact material.
From the surface, it is invisible.
At Gomukh, however, that hidden world briefly reveals itself.
The continuous spring is like a small window into the geology below.
Research on Lonar's drainage system has found that groundwater contributes to the lake even outside the monsoon, while springs occur where the geological structure allows groundwater to reach the surface.
More recent geophysical work has also identified groundwater-favourable zones associated with fractured and weathered basalt, vesicular layers and ejecta-derived material.
The water you see is therefore only the final few metres of a much longer journey.
Its real journey may have begun far above you, when rain first entered the ground.
There is something beautiful about the timescale of this story.
The meteorite impact lasted only moments.
The fractures and folds it created have remained for thousands of years.
Rain has continued to enter the landscape.
The rock has weathered.
The forest has grown.
Groundwater has followed the pathways available to it.
And somewhere along the crater wall, water keeps finding its way into the open air.
The event that created Lonar was violent.
The result you see at Gomukh is anything but.
It is quiet.
Almost ordinary.
A stream of water coming from stone.
Until you understand what you are looking at.
Then the spring becomes a clue — a visible trace of an invisible world beneath the crater.
The next time you stand beside the water at Gomukh, look beyond the stream.
Look at the rock.
Think of the ancient lava that became basalt.
Think of the meteorite that shattered and rearranged it.
Think of the tiny cavities in vesicular basalt.
Think of weathered layers, broken ejecta and deep fractures.
Think of rain disappearing into the ground and travelling silently through a maze you cannot see.
And then watch the water emerge.
What appears to be a simple spring is actually the end of a geological story that began with a collision from space.
The meteorite created the crater.
The impact reshaped the rock.
The rock guides the water.
And at Gomukh, the hidden story finally comes to the surface.