Description: <DIV STYLE="text-align:Left;"><DIV><P><SPAN>BEDROCK_SURFACE_250K_IGS_IN.SHP is an Esri line shapefile providing a contoured depiction of the bedrock surface elevation of Indiana. Surface contours are represented by polylines (50 foot contour interval) each with a single value that provides estimated elevation of bedrock surface in feet.</SPAN></P></DIV></DIV>