Edit History

Following Rodin's lead, you make your way back around the ruins of the keep and carefully across the ancient causeway. The dry moat you're crossing is roughly 10 feet wide and 10 feet deep. Its packed earth walls have slopes of about 60 degrees. The inner slopes were probably once studded with sharpened wooden stakes to discourage attempts to scale them, but even if that was so, these must have long since rotted away. Now, the whole ditch is filled with vines and brambles. Those of you familiar with keeps, such as those commonly found in Cormyr, know a timber gatehouse with two portcullises and several murder holes most likely once guarded the keep's main entrance, but any such structure is long since gone without a trace.
A glance about confirms that all the surviving parts of the ruin are made of stone, now mostly badly cracked with evidence of damage from fire and weathering.

What remains of the outer, curtain, walls is roughly 10 feet thick overall, made from courses of stone a foot thick, with dirt and rubble sandwiched in-between. They now rise anywhere from 5 to 15 feet high around the ruin but no higher. What you can make of the inner walls, what's left of the ruined buildings inside the curtain wall have stone walls roughly 2 feet thick and 10 to 15 feet high. 

Weeds and brambles fill the open courtyard of the ruin, bursting through the flagstone floor and a couple of trees rise up from it's surface, one a stately looking oak rising above the remains of the walls of one of the innermost structures. A pile of rubble is strewn across the floor of the smaller interior structure, visible from the entranceway.