http://www.deq.state.va.us/export/sites/default/gwcharacterization/images/mill_run_spring_small.jpg

 

 

 

http://www.nps.gov/ozar/planyourvisit/images/Big-Spring-Fall-nice-1_1.jpg

 

 

http://mo.water.usgs.gov/projects/mining/images/BigSpring090401-05sm.gif