Field Notes: The Patagonian Mud Fiasco

It was May 2024 and winter in Patagonia came early that year. The truck started to slowly drift sideways, no longer able to grip the once gravelly dirt road that had turned into sticky, squelchy wet clay after only an hour of barely drizzling. We got out and with a shovel or our bare hands scraped off the pounds of wet clay that had covered the truck’s wheels. So much mud had accumulated between the tire and the truck itself that the tires could no longer spin. We climbed back in and advanced another 50 meters before we had to repeat the process. At this rate it took us nearly 2 hours to get back to town, which was only 12 km away. Good thing that it wasn’t farther away, because the drizzle became a slight but steady rain and if we’d been just an hour later we might have had to leave the truck in the mud until things dried out almost a week later. 

An image of a researcher pouring diesel from large red fuel containers into the gas tank of a truck. The truck is parked on a dry dirt road, surrounded by small scrubby plants stretching for miles in a wide flat landscape, under a blue sky dotted with clouds.
Olivia filling her lab’s field truck with diesel while in a remote corner of the field site.  
Photo Source: Olivia Feldman

Ironically, it was at my field site in coastal southeastern Argentina, part of the dry Patagonian steppe, that I learned to respect the rain and the mud it causes. In this corner of the world, rainfall averages 200mm a year [1]. It means my study area is pretty dry, but because the sediment throughout my study area is largely clay, even a light dusting of rain or snow turns the ground into wet cement, trapping vehicles. Before my first round of fieldwork in 2022, rain usually meant it was time to put on a rain jacket, cover my pack and keep walking unless there was lightning. But I quickly learned that if you stay out too long, the ground can go from soft and slippery to quicksand in just a couple hours, and in some areas in just minutes. On the reserve where I spent most of my time, I could walk to the main road within 10 km of most of the spots where I would set up camera traps, and NGO staff would eventually drive by. However, when I placed cameras out at the ranch, or when I went down little-used routes to reach ranchers for interviews, I didn’t have that same guarantee. And when there’s no cell signal or wifi, even being stranded 20 km from the field station or nearby town can be complicated. 

An image taken by a camera trap of two domestic sheep drinking from a small pond with muddy banks. In the background are green plants and a blue sky dotted with clouds.
Parts of the field site can get muddy and form temporary watering holes quickly, as seen at one of Olivia’s camera trap sites. The site is prone to forming puddles and ponds, and this picture was taken shortly after a few days of steady drizzling. In the picture two domestic sheep, Ovis aries, drink from the pond. 
Photo Source: Olivia Feldman
An image taken by a camera trap of a Patagonian grey fox walking across a flat stretch of mud with a small puddle of water visible behind the fox. In the background are green plants and a clear blue sky.
This picture, at the same site, was taken a couple of weeks later and the pond is nearly drained. In the picture is a Patagonian grey fox, Lycalopex griseus
Photo Source: Olivia Feldman

So I learned to respect the rain, I learned to read the land, and most of all, I made mistakes and learned that getting stuck in the mud comes with fieldwork. The first time the truck got really stuck, it took several failed attempts to pull it out with two other trucks (which then also proceeded to get stuck) before a tractor came and rescued all three of us. The second time, I got cocky and got my brand new (to me) 4×4 stuck at the edge of a dried lagoon in the middle of summer – and it hadn’t rained in weeks. Turns out the clay is no joke, and only a few inches below the seemingly dry, cracked surface lay the squelching mud. That time, between patient, steady maneuvering, shoveling, and creating makeshift planks of rock and sticks, my tech and I managed to get the truck out on our own… after 4 hours of heavy work. And that brings me to the last time, when the truck was drifting and we barely made it back. That was because I made the call to put on our rain jackets and keep working because a light drizzle wouldn’t hurt us. I made this call after 2 years of working in the region. Sometimes you need to make the same mistake a few times before you really learn. It’s a part of fieldwork to have truck trouble, and it’s a part of fieldwork to learn how to manage it. 

A close-up image of a rugged, extremely muddy truck that the bumper has fallen off of, parked on a gravel road.
When Olivia first arrived to her field site, her collaborators lent her a field truck that worked great but was a little beat up. After her first rainy days the bumper accumulated so much mud it fell off. 
Photo Source: Olivia Feldman
A close-up image of a truck partially sunken into the muddy ground. There are big piles of mud piled up around the wheels of the truck. The surface of the mud is cracked in some places and the mud underneath looks slick and wet.
Olivia’s truck got stuck in the lagoon because she was overconfident about how dry the lagoon edge would be. 
Photo Source: Olivia Feldman

Once you get this down in the field, you can finally appreciate that truck troubles and getting stuck in the mud can remind us to slow down and respect the realities of our natural terrain. These moments also remind us of the beauty of camaraderie, and in Argentina, getting stuck gave me many moments to appreciate the generosity of the many folks who taught me how to avoid getting stuck and when I did, helped get me unstuck. 


[Edited by Clay Jones]

References:

1. Cabrera, Angel L. “Fitogeografia de La Republica Argentina.” Sociedad Argentina de Botánica XIV, no. 1–2 (November 1971).

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