
24' Lower Armadillo Falls, Lost Valley State Park, Arkansas by Jeff Rose Photography

DSCN5265 by David J. Thomas, Ph.D.

SILV0127 by David J. Thomas, Ph.D.

IMGP4512 by David J. Thomas, Ph.D.

GRAY0423 by David J. Thomas, Ph.D.

RED08418 by David J. Thomas, Ph.D.

RED08775 by David J. Thomas, Ph.D.

bat cave 003 by David J. Thomas, Ph.D.

ORNG3447 by David J. Thomas, Ph.D.

IMG_20150912_125134643 by David J. Thomas, Ph.D.

DJT_4957 by David J. Thomas, Ph.D.

Mark Martin Museum, Batesville (Ark.), 2 July 2009 by milanite

DAVE5438 by David J. Thomas, Ph.D.

Mark Martin Museum, Batesville (Ark.), 2 July 2009 by milanite

DJT03015 by David J. Thomas, Ph.D.

DSCN0961 by David J. Thomas, Ph.D.

SILV0091 by David J. Thomas, Ph.D.

IMG_0245 by David J. Thomas, Ph.D.

A55-DSC01174 by Michael McGaha

IMG_1982 by David J. Thomas, Ph.D.

IMG_5936 by David J. Thomas, Ph.D.

Batesville Hydro plant cleaning up from flood by Warren Woodbury

BLUE0866 by David J. Thomas, Ph.D.

Batesville Hydro plant at normal water level by Warren Woodbury

PURP1125 by David J. Thomas, Ph.D.

DJT_8420 by David J. Thomas, Ph.D.

DJT03012 by David J. Thomas, Ph.D.

IMG_0770 by LordWalt Thanks for 6.1 million views

DJT03033 by David J. Thomas, Ph.D.

BLUE0839 by David J. Thomas, Ph.D.

BLUE0830 by David J. Thomas, Ph.D.

BLUE0842 by David J. Thomas, Ph.D.

BLUE0838 by David J. Thomas, Ph.D.

BLK21281 by David J. Thomas, Ph.D.

IMG_1242 by David J. Thomas, Ph.D.

BLUE0833 by David J. Thomas, Ph.D.

BLK20648 by David J. Thomas, Ph.D.

SILV0113 by David J. Thomas, Ph.D.

ORNG0120 by David J. Thomas, Ph.D.

SILV0068 by David J. Thomas, Ph.D.

P6270003 by David J. Thomas, Ph.D.

BLUE5071 by David J. Thomas, Ph.D.

IMG_0777 by LordWalt Thanks for 6.1 million views

SILV0098 by David J. Thomas, Ph.D.

BLUE1242 by David J. Thomas, Ph.D.

BLUE0843 by David J. Thomas, Ph.D.

BLUE5528 by David J. Thomas, Ph.D.

GRN_0171 by David J. Thomas, Ph.D.

IMG_1241 by David J. Thomas, Ph.D.

ORNG0128 by David J. Thomas, Ph.D.

BLK11479 by David J. Thomas, Ph.D.

IMG_5950 by David J. Thomas, Ph.D.

DJT_8319 by David J. Thomas, Ph.D.

SILV0112 by David J. Thomas, Ph.D.

SILV1289 by David J. Thomas, Ph.D.

DSCN5449 by David J. Thomas, Ph.D.

Side View- Pfeiffer Creek Bridge by US 71

IMG_0769 by LordWalt Thanks for 6.1 million views

IMG_0779 by LordWalt Thanks for 6.1 million views

IMG_0771 by LordWalt Thanks for 6.1 million views