Gavan of the Greenwood Keep was a prosperous man according to the standard of these latter days, and his estate was reckoned to be the largest and finest holding in all the western country-side. A man might walk from break of day until darkness and yet not complete the periphery of its boundary-lines, but the palisaded portion included only the arable land and home paddocks and was of comparatively limited extent. Viewed from a bird's-eye elevation, this stockaded enclosure appeared to be laid out in the shape of a pear, the house being situated near the small end. The greatest length of the area thus enclosed was a mile and a half, and it was three-quarters of a mile wide at the big or southern side, tapering down to a couple of hundred yards at the northern entrance or barrier. A quarter of a mile back from the north gate stood the keep, not one distinct building, but rather several, built in the form of a hollow square and consolidated for mutual protection. The principal entrance, the one at the northern end, was called the water gate, for it should be explained that the keep stood on the bank of the Ochre brook and access was only possible by means of a drawbridge. Some day Sir Gavan intended to turn the course of the stream so as to carry it around the keep and thereby secure the protection of a continuous moat. But hitherto other duties had seemed more pressing, and the plan was still in abeyance. Entering through the covered way of the water gate, with guard-room and bailiff's office to the right and left, one found himself in the court-yard, some fifty yards in the square. On the right were the cow-barns, horse-stalls, granaries, tool-houses, and store-buildings, while the dwelling proper, known as the Great House, occupied the entire left of the square, the kitchens and other offices adjoining the retainers' quarters on the south. An enormous hall, running clear to the roof, took up the central portion of the house, staircases and galleries affording access to the store and sleeping-rooms on the second and attic stories. The roof proper was surmounted by a para-petted and loop-holed structure called the fighting platform, and it was thither that Constans had repaired upon receiving the startling intelligence of his sister's disappearance. Let us rejoin him there.