If the sequence of bedrock formations of northern Indiana were exposed, the extensive cliffs along the ‘deep stage’ of the Teays and its tributaries would provide a clearer understanding of the stratigraphy of northern Indiana. The entire Silurian section below the Liston Creek limestone[7] and a few feet of the upper Ordovician probably would be visible in the vicinity of La Fontaine.[2] In Wabash County the part of the Teays Valley above the ‘deep stage’ consists of broad terraces at an altitude of about 600 feet (180 m).