         Sentence t: Upriver, east of Blois, ina  huge densely wooded park  surrounded by 31 km (20 miles) of  high walls, the brilliant white Ceteau  de Cham??bord is the most  extravagant of. all _ the _ royal  residences in the Loire Valley.    Sentence 2: The woods are full of  dangerous creatures, which is why  the Ceteau has such high walls.    