The Rock that Weeps
What makes Weeping Rock weep? Mud deposited
in lowland streams millions of years ago was covered
over with wind blown sand. Centuries of pressure
squeezed the mud into thin shale layers and the sand
into thick layers of sandstone. Water passes easily
through sandstone but not through shale. Rain and
snow falling on the plateau above soaks into the
sandstone. When it reaches the hard shale it moves
sideways to emerge on the face of the cliff as a spring.
This sign is found along a route which has been photographed for inclusion in
the UntraveledRoad virtual world. To see and follow the route this sign
is on, click on its image.