From the field

Mountains of Trash (Ladakh Lakes #2)

Twenty four Mountain Dew bottles and counting. It has now become a game to count the number of freakishly fluorescent fizzy drink bottles we see strewn along the roads in Ladakh. As the car snakes its way towards the most remote of lakes, we continue to find bottle after bottle. 

Here in a remote part of the Indo-Tibetan plateau sits Lake Yaye Tso, like a jewel in a crown of Himalayan mountains. The lake is luminous, changing colour from grey-green to turquoise and then back to an other-worldly blue. On the shores of this beautiful isolated lake sits another Mountain Dew bottle, now an integral feature of the landscape. 

A discarded Mountain Dew bottle found on the shores of a high-altitude lake in Ladakh. Photo: Gabriella D’Cruz | 2019

A discarded Mountain Dew bottle found on the shores of a high-altitude lake in Ladakh. Photo: Gabriella D’Cruz | 2019



The Himalayas have over the years grown in popularity, with tourist towns springing up across the region. Lack of planning and foresight have led to a mounting waste problem that’s getting harder and harder to resolve. Ladakh, with its stark desert landscape and sheer mountains, is now glittering with garbage. 


Who do we hold responsible for contaminating even the most remote corners of our planet?


For starters - ourselves. We decided to calculate how much waste four environmentally conscious people generated over a two week expedition in the mountains. My Snicker-bar addiction combined with Nandini’s potato-crisps obsession didn’t help, but we tried to keep our plastic consumption to the bare minimum, carrying our own drinking water bottles and not chewing gum made a difference. At the end of our little Himalayan adventure we had generated a total of sixty individually identifiable pieces of litter.


Keeping track of everything we generated on a daily basis was a distressing process. One butter pack, one biscuit wrapper, two cigarette butts, a packet of Maggi noodles - single use and destined to end up buried underground, dumped in a landfill or blowing across some pristine plateau. I haven’t had to document what I’ve generated before. This was both educative and depressing. 


However, our waste footprint was dwarfed by the amount of garbage we found at the nine lakes we surveyed. We began fervently removing all the plastic waste we saw, from large gunny bags to earphones to tiny slivers of plastic wrappers, soon realising that the more human litter we collected the more we found. Plastic disintegrating in the soil, plastic floating in the lakes and sunken plastic at the bottom. After documenting a total of six hundred and ninety eight pieces of litter in varying forms at the nine lakes we visited, from beer cans to flip-flops, and from sanitary napkins to ketchup sachets, we carried it with us to Leh. We added it to the city’s waste cycling stream, in the hope that ultimately, it would be sensibly disposed of. 


A majority of the waste generated in remote Himalayan towns remains where it is, clogging up streams, sinking into the soil and contaminating lakes. Pangong Tso, one of the most popular among tourists attracts over six hundred vehicles to its shores every day. The lesser known lakes such as Yaye Tso and Chilling Tso are still relatively pristine; however, with Ladakh’s new status as a Union Territory it is only a matter of time before tourists make their way to these more isolated lakes, with Maggi noodle packets and Mountain Dew bottles in tow. 



A marmot bounding away from the camera. Photo: Shashank Srinivasan | 2019

A marmot bounding away from the camera. Photo: Shashank Srinivasan | 2019

For now Yaye Tso sits beautiful and nearly free of plastic, its waters supporting a fragile marshland full of bar-headed geese and colonies of pikas and marmots. I pick up the rogue Mountain Dew bottle as we leave for Leh. A spot of paradise, plastic free for a day.

The author photographing a Mountain Dew bottle before removing it from the lake shore. Photo: Nandini Mehrotra | 2019

The author photographing a Mountain Dew bottle before removing it from the lake shore. Photo: Nandini Mehrotra | 2019

Introduction: Machine Perspectives on Alien Landscapes (Ladakh Lakes #1)

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In August and September 2019, a team of four humans and two robots set out to survey a set of high-altitude lakes in the Indian trans-Himalayan region. The purpose of this expedition was two-fold; for the robots to explore the lakes, providing a perspective on them impossible from human eyes, and for the humans to assess the amount of human litter in and around the lakes, with a special emphasis on plastic. Over the next few weeks, we’ll be sharing our experiences and imagery from the expedition in the form of blogposts on this blog, and will eventually be cross-posting them on National Geographic’s OpenExplorer portal as well.

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This expedition was supported by a National Geographic Early Career Grant and by the National Geographic/OpenROV S.E.E. Initiative.

My first weeks with Technology for Wildlife

We headed out to the islands in the late morning. A bike ride, ferry and short walk later, we arrived at a beautiful open grassland overlooking the river. An ideal spot for a practice drone flight.

The author enjoyed the open vistas of Goa’s river islands.

The author enjoyed the open vistas of Goa’s river islands.

After a perfect afternoon of minty grass, nice wind and aerial photography, we headed back to the mainland; signing off the work day with big Thalis. That evening we attended a concert that gave us goosebumps and ended the night with pao and honey tea. The next day began at 5.30am for a beach survey in the hope of getting aerial imagery for our project with the PlasticTide (www.theplastictide.com). After a mid-afternoon break to recover from our early start, we headed for a meeting with the head of a Government Department. What we expected to be a 20 minute formal meeting turned into a 2 hour conversation which closed with some exciting prospects for work. We came back to base to discuss the meeting and then ended the day with another amazing performance at an Arts Festival.

I think these two days are a useful sample to describe how my first weeks in Goa with Technology for Wildlife have been. It’s been a wonderful mix of learning, work and making the most of this beautiful state. All 3 aspects have meshed together wonderfully to make it overwhelming in the best way possible.

Learning about Technology for Wildlife’s plans and clientele helped me better understand their impact model. Even in this short period, we were able to meet a variety of people, and I was introduced to a number of diverse and exciting projects. I learned a lot about the technical requirements of the work through both directed and exploratory reading as well as with hands-on practice. For example, understanding how to use a drone for mapping was completely new for me. Over the past few weeks, I’ve learnt how to operate the hardware and how to process the collected data using open source software.

The author preparing a drone for flight


Working with passionate conservationists is an amazing source of learning, ideas and hope. It was wonderful to feel genuinely heard and valued, and this only added to my excitement to create further opportunities and conservation impact with Technology for Wildlife.