THIS UNNAMED GEOLOGICAL formation is the likely result of wind, rain and time eroading away surface material to expose what at one time would have lava (magma) that had cooled and solidified. Copyright © 2010 by DL Tolleson. All Rights Reserved.
COMING INTO OR out of the Chisos Mountains, this is the northwest view and is several miles south of Panther Junction and the headquarters for Big Bend National Park. Copyright © 2010 by DL Tolleson. All Rights Reserved.
THE CLARET CUP is covered in barbed spines and blooms a reddish, cup-shaped flower from about April to June or July in Big Bend National Park. Copyright © 2010 by DL Tolleson. All Rights Reserved.
THIS VIEW FROM a formation called, “The Window,” looks out from the westside of the Chisos Mountains in Big Bend National Park. Copyright © 2010 by DL Tolleson. All Rights Reserved.
INDIAN HEAD MOUNTAIN and its southern region offers this “leaning” wall of geology at the western boundary of Big Bend National Park. The rocks of the foreground are boulders ranging from man-sized on up. Copyright © 2010 by DL Tolleson. All Rights Reserved.
MASSIVE AND TOWERING, this wall of the geology is at least a couple of hundrend feet high and situated in the Indian Head area of Big Bend National Park. Copyright © 2010 by DL Tolleson. All Rights Reserved.
WIDE-OPEN PANORAMAS and mountainous terrain such as this are routine along roadside in Big Bend National Park. Copyright © 2010 by DL Tolleson. All Rights Reserved.
THE SOUTHWEST SIDE of the Chisos Mountains, also known as the Chisos Mountain Basin and home to the lodge in Big Bend National Park. Copyright © 2011 by DL Tolleson. All Rights Reserved.
A FALLEN TREE is an impassable barrier in an otherwise debris-free dry riverbed in Big Bend National Park. Copyright © 2010 by DL Tolleson. All Rights Reserved.
INDIGENOUS TO TEXAS, New Mexico and Arizona, Javelinas in Big Bend National Park genetically differ from swine. Copyright © 2010 by DL Tolleson. All Rights Reserved.
LOST MINE TRAIL in Big Bend National Park, looking southward over Juniper Canyon, the Chisos Mountain’s Northeast Rim and into Mexico. Copyright © 2010 by DL Tolleson. All Rights Reserved.
A TREE SILHOUETTED against the night sky as seen from Chisos Basin in Big Bend National Park. Copyright © 2010 by DL Tolleson. All Rights Reserved.
THIS VIEW EAST of a volcano is an illusion of the setting sun streaming through the Chisos Basin area behind Casa Grande Peak in Big Bend National Park. Copyright © 2010 by DL Tolleson. All Rights Reserved.
WRIGHT MOUNTAIN in background at Big Bend National Park. Copyright © 2010 by DL Tolleson. All Rights Reserved.
A VIEW WESTWARD after sundown from the Indian Head area of Big Bend National Park. Copyright © 2010 by DL Tolleson. All Rights Reserved.
A CAMERA COMPENSATION for the limited light after sundown provides this view westward from the Indian Head area of Big Bend National Park. Copyright © 2010 by DL Tolleson/Camera One. All Rights Reserved.
SANTA ELENA CANYON after sunset, as seen from the Chimneys in Big Bend National Park. Copyright © 2010 by DL Tolleson/Camera One. All Rights Reserved.

DL Tolleson.com

Author, Photographer, Researcher, Artist, Adventurer and Buccaneer Extraordinaire

“Or at least that’s the plan each morning after coffee.”


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Riverbed Landmark Image

Copyright © 2010, 2011 by DL Tolleson/Camera One. All Rights Reserved. This image may not be reproduced in any form or by any means without written permission from the author/photographer.

Riverbed Landmark Image

Copyright © 2010, 2011 by DL Tolleson/Camera One. All Rights Reserved. This image may not be reproduced in any form or by any means without written permission from the author/photographer.

Dry River Landmark, No. 1B

There are any number of ways to become lost in the desert. The typical way is to become disoriented (because everything looks similar) and being unprepared (not having a map, a compass, a GPS, food, water, flashlight, batteries, clothing adequate for the conditions, etc., etc.).

Here’s how I was “lost” for a few hours…

I had spent most of my day looking for a particular item of Indian rock art (the red buffalo) and had made note of a number of landmarks. However, I decided to leave the riverbed and scout higher elevations. I thus abandoned the landmarks I had previously identified—along with any recognizable trail. Those factors, in and of themselves, were not much of a problem because I was familiar with the distant surrounding landmarks (mountains). But the most important factor working against me was that I was in a losing race with the setting sun. That fact alone was very important.

Post Meridiem darkness in the desert yields indistinguishable black mountains but starlight sufficient to view immediate surroundings. In other words, you can see after a fashion but distant landmarks are useless for navigation. In short, after the sun set I had no clue where I was.

When reaching that point I pulled out the GPS for keeping a track of my subsequent trail. In this way I would know where I had been and a good idea of where I was going (the map was useless at that time). With both my GPS and Compass indicating south I knew that to my left was west and the riverbed from which I had climbed.

In that riverbed were formations I could use as landmarks—one of which was not too far removed from my original entry point of mid-morning.

That formation, pictured above, was easily recognizable as I passed it in the dark of night. But what I did not recognize was my entry point—which was a crevasse that carries run-off to the river during hard rains. And while I did specifically see it that night, I failed to recognize it for what it was.

I had traveled a good couple of miles beyond that entry point when I was finally uncertain of whether I had actually passed the entry point. If I had missed my entry point to the riverbed, I realized I would only miss it again if backtracking. And if I hadn’t passed it, I realized I was not recognizing anything in the dark—even with a flashlight (which, when used, ruins your night vison). So I climbed from the riverbed and for the second time of the night cut across the desert.

But whereas my first desert “crisscrossing” was to intersect with a riverbed of which I had personal knowledge, my second trail-blazing effort was in search of a road indicated on a GPS into which I had not loaded any sort of Park map.

Since I didn’t actually know the area, my quandary was two-fold: Am I anywhere close to where I think I am? Is this road on the GPS the one I think it is?

It turned out to be the correct road—the only road, in fact. The GPS readings in latitude and longitude correlated to a map position a couple of miles west of my car—which was a bit disorienting. For until I reached that road and compared my position to the map coordinates, I would have sworn I was east of where I had left the car. In other words I had walked out of the desert and onto the road west of where I expected to be. It would not be until I was in my rock art search of the next day that I would grasp how missing the riverbed landmark had resulted in overshooting the car by at least a couple of miles.

So let this be a lesson you learn well. Never walk off into desert without the means by which to navigate your way back out. That means having a map, a compass, a GPS, a flashlight and extra batteries for whatever uses them.

—DL Tolleson


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Camera Data

CAMERA
Nikon D300S

LENS
VR 18-200mm, F/3.5 - 5.6G

FOCAL LENGTH
38mm

FOCUS MODE
AF-C

AF-AREA MODE
Dynamic, 9 points

VR
On

Exposure Data

APERTURE
F/11

SHUTTER SPEED
1/125s

EXPOSURE MODE
Manual

EXPOSURE COMP
0EV

METERING
Matrix

ISO
500

Image Data

ORIG IMAGE QUALITY
Tiff-RGB (8-bit)

ORIG IMAGE SIZE
4288 x 2848

ORIG DATA SIZE
35.1 MB

CAPTURE DATE
12/10/2010

Flash Data

FLASH SYNC MODE
N/A

FLASH MODE
N/A

FLASH EXPOSURE COMP
N/A
Original and Web-based Image

The original image is a Tagged Image Format File (TIFF) with a file data size of 35.1 megabytes (MB).

For display on this web site the TIFF was duplicated and the duplicate re-formatted as a Joint Photographic Experts Group (JPG/JPEG) image with a file data size of 11.8 MB. To approximate detail visible at the time of capture the image was sharpened as necessary and resampled via the Photoshop Bicubic Sharpen algorithm. The re-sampling increases the image resolution from 300 Dots Per Square Inch (DPI) to 360 DPI.

Unless otherwise noted the image was corrected to offset color shift and balance. This restores black (shadows), white (highlights) and neutral gray (neutral mid-tones).

Image Naming Convention

• An unnumbered image is the only one of the subject matter.

• A number corresponds to the sequential order in a subject-matter-related sequence.

• The letter “B” indicates color correction to approximate what was visible when the image was captured.

• The letter “C” indicates enhancement beyond an approximation of what was visible at the time of capture.

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