This bed lies from 200 to 300 feet above the level of the sea, an arm of which extends to that town, but no shells are to be found upon its shores. It covers a space of several square miles, and is coated with soil, which in many places has been removed, the shells being taken to mend the roads, as well as for building purposes, and for manure. Such openings upon the surface are frequent on the hill just above the town, on the road to Gottenburg; but a mile or two on that to Wennersburg, and to the left, there is a large vertical opening, exposing to view from thirty to forty feet of the bed's depth, its entire depth being as yet unknown.