The trek starts at Kafnu base camp, where a smaller road ends and the trail begins. No fanfare. You leave the apple orchards behind and walk into forest.
The trail climbs through dense deodar and pine, the kind where the canopy closes overhead and the only sounds are the Bhaba river below and your own breathing. The first camp at Muling sits in a clearing in the valley. Quiet. Smoke from a shepherd's fire. Nothing to do except eat and sleep.
From Muling the valley opens up. Kara Lake appears almost without warning, a glacial pool reflecting the ridgeline so perfectly that you stop walking and just stand there for a while. The water is absurdly clear and absurdly cold. I put my hand in for about four seconds before common sense took over.
The push to Fustirang is where the landscape starts to change. The trees thin out. The grass gets shorter. The valley widens and the Bhaba river narrows to a glacial stream threading through boulder fields. The air is thinner and the sky feels closer. You're leaving the green world behind, and there's no going back without retracing every step.
Bhaba Pass is not dramatic the way you'd expect. No sweeping panorama waiting at the top. Just a narrow saddle between two ridges, prayer flags snapping in wind that hasn't stopped since you left the treeline. The GPS read 4,919 metres. My lungs felt every one of them.
But the thing about standing up there is this: behind you is everything green. Forests, rivers, orchards, the valley you walked through for days. Ahead of you is a completely different planet. Brown. Grey. Dry. Vast. You can see the Pin Valley stretching out below like a desert dropped between mountains. Same state, same country, same range. Entirely different world.
You walk out of green and into grey. Out of forests and into desert. The pass doesn't separate two valleys. It separates two versions of the Himalayas.
The camp at Bwalder, at about 3,950 metres on the Spiti side, was the first night where the cold was serious. The kind of cold where you wear everything you brought and still feel it. But the sky. I don't have a photograph that does it justice. No light pollution for a hundred kilometres in any direction. The Milky Way wasn't a smudge overhead; it was structural, like you could see the depth of it.
From Bwalder, the trail drops into the Pin Valley. Ochre cliffs, dry river beds, a silence so complete you can hear your own heartbeat. The trail ends at Mud Village, one of the highest inhabited settlements in Spiti. Small stone houses. Prayer wheels. A road that eventually leads to Kaza, the nearest thing to a town in this part of the world.
I sat in Kaza that evening with a cup of tea, looking at the brown mountains on all sides, and thought about the green valley on the other side of the pass. Fifty kilometres apart. Could be fifty thousand. The trek was done. Getting home was going to be a different kind of problem.
The trek was the easy part.
The road from Kaza back through Kinnaur is carved into the side of mountains that haven't decided whether they're finished falling. Five landslides between Kaza and Shimla. Five. One of them had wiped the road clean off the mountainside. There was a scramble path carved into the debris by people who'd crossed it enough times to make it look routine. Entry point, exit point, final exit. You climb over loose rock at 1,900 metres with your full pack, hoping the hillside has finished moving for the day.
We stayed the night at Tapri, a small town on the Sutlej where the river is wide and loud and green. Next morning, back on the road. More slides. More detours. More sections where you look out the window and see a drop that doesn't end.
The Himalayas give you everything on the trail and then test you one more time on the way out. You cross a 4,919-metre pass on your own feet, sleep under the Milky Way, walk from green into grey. And then you spend two days dodging landslides in a bus with no suspension. That's the full picture. I wouldn't trade any of it.