They followed the footsteps up the rise. Near the summit they disappeared in a growth of nettles, but reappeared on the other side, skirting a number of bowl-shaped depressions clustered in groups along the brow of the rise. These were the hut circles--the pit dwellings of the early Britons, shallow excavations from six to eight feet deep, all running into one another, and choked with a rank growth of weeds. Between them and a little wood which covered the rest of the summit was an open space, with a hole gaping nakedly in the bare earth. "That's the pit where the body was thrown," said Queensmead, walking to the brink. The pit descended straight as a mining shaft until the sides disappeared in the interior gloom. It was impossible to guess at its depth because of the tangled creepers which lined its sides and obscured the view, but Mr. Cromering, speaking from his extensive knowledge of Norfolk geology, said it was fully thirty feet deep. He added that there was considerable difference of opinion among antiquaries to account for its greater depth. Some believed the pit was simply a larger specimen of the adjoining hut circles, running into a natural underground passage which had previously existed. But the more generally accepted theory was that the hut circles marked the site of a prehistoric village, and the deeper pit had been the quarry from which the Neolithic men had obtained the flints of which they made their implements. These flints were imbedded in the chalk a long way from the surface, and to obtain them the cave men burrowed deeply into the clay, and then excavated horizontal galleries into the chalk. Several of the red-deer antler picks which they used for the purpose had been discovered when the pit was first explored twenty-five years ago. "Mr. Glenthorpe was very much interested in the prehistoric and late Stone Age remains which are to be found in abundance along the Norfolk coast," he added. "He has enriched the national museums with a valuable collection of prehistoric man's implements and utensils, which he recovered in various parts of Norfolk. For some time past he had been carrying out explorations in this district in order to add to the collection. It is sad to think that he met his death while thus employed, and that his murdered body was thrown in the very pit which was, as it were, the centre of his explorations and the object of his keenest scientific curiosity." "Did you ever see clearer footprints?" exclaimed the more practical-minded Galloway. "Look how deep they are near the edge of the pit, where the murderer braced himself to throw the body off his back into the hole. See! there is a spot of blood on the edge." It was as he had said. The footprints were clear and distinct to the brink of the pit, but fainter as they turned away, showing that the man who had carried the body had stepped more lightly and easily after relieving himself of his terrible burden.