A Springtime Visit Behind the Rocks Offers Some Surprises
On April 15, 2012, I drove from Moab, Utah to Behind the Rocks.  There, for one long weekend each year, that area is the hub of activity for the 24-Hours of Moab
 off-road bicycle  race. It had been six months since my October 2011 
visit to the event. Half way  between the two races was a good time to 
assess the environmental impact of  annual off-road bike racing Behind the Rocks.
Behind the Rocks  is a sandy-soiled mesa ten miles south and two miles off-road from Moab, Utah. In  spring, summer and fall, since the 1890’s, cattle had grazed Behind the Rocks.
  Before its first ecological breakdown, the fragile mesa endured 
decades of  overgrazing. Only its 5500-foot elevation has kept the area 
from cactus  infestation, as happened in the upper section of the nearby
 Spanish Valley.
  Under the trampling hooves of range cattle, indigenous cryptobiotic 
soil deteriorated and blew away. Whatever natural vegetation  may have 
existed prior to a century of grazing, the mesa now supports a  
combination of weedy and grassy areas. 
Kane Creek  provides the main runoff channel for the entire mesa. Although the spring flow can be  intermittent
 or nonexistent, summer thunderstorms sweep huge amounts of soil  down 
Kane Creek. Increased movement of soil amplifies streambed erosion. 
Where  small watercourses once meandered, sandy arroyos with 
straight-sided banks now  stand. Some areas have lost all their soil, 
leaving expanses of bare rock.
For the past seventeen years, hundreds of off-road bicycle racers and fans have  camped, played and ridden Behind the Rocks
  each October. Each year, self-appointed guardians of the local 
environment  lament supposed damage done by the 24-Hours of Moab  Race. 
Some hike cross-country in order to photograph a few bicycle tracks  
that stray from the designated course. The real issue is not only about 
damage  by errant bike racers. It is also about the monitors tramping 
across a fragile  landscape in order to “get their shot”.
Driving across the deserted landscape that day, I could not locate the 
bicycle  race venue. Without its tents and bicycles to identify it, I 
drove on by. Soon,  I came across an open area eroded by off-road 
vehicles. Along the fringes of the  area, I could see how vegetation had
 once held the soil. Within the eroded area,  there were only traces of 
native vegetation. Although I saw no off-road vehicles Behind the Rocks  that day, evidence of vehicular traffic was everywhere. One nearby sand dune had  hundreds of tracks leading to its summit.
Getting out of my truck, I surveyed the 24-Hours of Moab Race venue and the La Sal Range
  beyond. Admittedly, there was little vegetation where the main tent 
had stood.  Only after leaving my vehicle did I realize the damage that I
 was causing.  Looking down, I saw that the wide tires on my truck had 
crushed whatever  soil-crust had formed since October 2011. Otherwise, 
the race venue looked quite  similar to much of the surrounding 
landscape.
During my earlier discussion with 24-HOM race promoter  Laird Knight,
 he  had told me about their environmental amelioration techniques. Each
 year, after  all trash, facilities and vehicles depart; Knut & Sons
  roll their enormous water trucks around the empty venue. A generous 
sprinkling  of water turns fields of dust into fields of mud. As the sun
 dries the mud, it  forms a crust almost as strong as natural 
cryptobiotic soil. Unless churned by  wheels, hooves or feet in the 
off-season, Laird said, “Racers and visitors to  the next 24-Hours of  Moab Race can expect to see the area look much as it has for the past  eighteen years”.
Rather than seeking to end the one family event
 that  helps to regenerate the environment Behind the Rocks each year,  
environmentalists should concentrate on overuse by off-road vehicles. 
The Bureau  of Land Management should place an immediate ban on driving 
in watercourses and  sensitive dune areas. If not, the remaining soil on
 the mesa will continue its  slow-motion disintegration down Kane 
Springs Canyon and into the overburdened Colorado River. 
Behind the Rocks combines both fragility and stability in one location. 
With  respectful usage, the mesa will regenerate or at least maintain 
itself. If  scoured down to bedrock, Behind the Rocks will lose its 
appeal as a place for  human recreation. With care and cooperation by 
all interested parties, Behind  the Rocks will remain a remarkable place
 to bike, hike or even to trail-ride in  a Jeep.
    
  
By James McGillis at 05:45 PM | | Comments (0) | Link

 
 
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