Nilli Aai Lake Trek The Hidden Manalsu Valley

Day 1: Manali- Lamadugh (3360m/ 4-5hrs)

Day 2: Lamadugh - Tosh- Thatch (4040m/ 4-5hrs)

Day 3: Tosh Thatch- Dohrani 3550m over Udi Pass  (5-6hrs)

Day 4: Dohrani- Nilli aai base(4330m) via Seri (3850m) 8--hrs

Day 5: Excursion - Nilli Aaii Lake (4330m)

Day 6: Nilli aai base - Dohrani Back (7-8hrs)

Day 7: Dohrani - Tosh Thatch (7-8hrs)

Day 8: Tosh Thatch- Rani Suit Lake (3850m/ 5-6hrs)

Day 9: Rani Sui to Sanchar Village & Drive to Manali

Day 1: Manali to Lamadugh 7km 3360m 4-5hrs 

The first day of the trek leads through cool forests of giant deodars (Cedar), climbs gently through Manalsu valley with the Manalsu torrent for company. The walk is through pine, texus, mapple & oak forest, and is full of vegetation including wild cherries and various flora to witness. 

Campsite in the lush green meadow of Lamadugh.

Day 2: Lamadugh to tosh thatch 4040m 

The trail now begins to ascend steeply through woodlands and meadows. With wild alpine flowers strewn all around. The brilliant shrubs of Rhododendron and Birch pave the way to the pass after which a gradual and uphill ascend leads to the campsite at Tosh Thatch. A beautiful campsite atop with 360-degree view of Dhauladhar & Pir-panjal Mountain ranges.

Day 3: Tosh thatch to dohrni 3550m 

After an early breakfast we hike towards the Udi Zot. The walk is on the edges of a mountain with a gradual ascend and traverse till the pass. From the pass you can have the view of Manalsu valley. A steep descend takes you all the way down to Dohri which is a perfect place to set the camp for the night.

You’ll be accompanied by shepherd and their herd here. Best part of the Dohri is that this is one of the places to witness the Mt. Deo Tibba & Indrasana peaks on pir panjal range. Spend night star gazing the stars & milky way.

Day 4: Dohrani- Nilli aai base(4330m) via Seri (3850m/ 8-hrs)

Today’s route Is all uphill on the bank of river Manalsu. During early season you can walk on the snow bridge made on river by avalanches. It takes 4 hrs to reach the Seri, a flat ground in the middle of rocky path. Further on the snow bridge walk all the way up till the base of the Lake. Route is full of surprising waterfalls, Nalls and Himalayan flora taking your breath away. 

Campsite is set at the base of the Nilliaai lake before the last stream that we cross next day to reach the lake. 

Day 5 Explore the region and visit the Lake 4330m 

After breakfast we cross the last stream and hike the last but rocky ascend all the way to the top to have the first glance of the lake. Walk down till the lake and spend your quality time for which you’ve waited. Spending enough time to content our souls return back to the camps and spend time resting and exploring around. 

Day 6: Nilliaai base - Dohrani Back (7-8hrs)

After an early breakfast we trek back to our previous location, “Dohrni” and set the camp for the night. spend your time taking pictures and exploring the surrounding and hearing the stories from the shephards.

Night in the camp.

Day 7: Dohrani - Tosh Thatch (7-8hrs)

Today we hike back up all the way up to Udi zot which will consume 3-4hrs of your day, further to it trek continuously till we reach Tosh Tatch. We set our camps here for the night and enjoy the sunset and view of Pir Panjal range. Night in the camps

Day 8: Tosh Thatch- Rani Suit Lake (3850m/ 4-5hrs)

Today we will visit our next destination which is Rani sui Lake. We trek same way back till we reach Khandpari and then take the route to Rani sui Lake. We have plenty of time to spend at the lake and exploring the surrounding and the view that it offers.  

Day 9: Rani Sui to Sanchar Village & Drive to Manali

Today we’ll start early and trek toward south of the lake all the way to Sanchar village, from where a car will drive you all the way to Manali, where your trek Ends.

Cost is based on minimum 10 Person


  • Pick up and drop at trekking point

  • Vehicle- Tata sumo/Tempo Traveler

  • All meals during trek (breakfast/lunch/dinner)

  • Lunch will be served packed.

  • Only veg meal (Indian, Chinese and Continental)

  • Mules/ Porters for carrying common equipment - like kitchen utensils, ration, tents.   

  • Qualified mountaineer guide

  • Accommodation in tents on 2/3 sharing

  • Sleeping bag & Mattress

  • Dinning tent, Toilet tent

  • Basic First aid kit with portable oxygen 

  • Forest permits and camping charges


    Personal expenses, mineral water/ beverages / chocolate / dry fruits.

    Insurance cost of emergency evacuation / travel insurance

    Mule / Porter for carrying trekker's rucksack, still/ video camera etc.

    Personal trekking equipment. 

    Food to/from the trekking point 

    Monument entry fee if any

    Bus / Flight / Train tickets.

    Any cost arising out of unforeseen circumstances: Road blocks, landslide, bad weather     

    GST 5%


    Nilli Aai Lake Trek

    India Streneous
    • Region: Manali 

    • Activity: Off Beaten Trek

    • Duration: 9 Days

    • Season: Mid-June to Nov 


    • Explore the Source of Manalsu River

    • Visit Nilli aai & Rani Sui Lake

    • Magnificent view of Dhauladhar & Pir Panjal Ranges




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