Black Knight Quest
Step 1 Key 5010 from the dead trees
Villa Scapula is a ruined house in the swamp north-west of Venore. The two dead trees west of it, at 32800,31959 and 32813,31964 (surface), each give a silver key 5010 once per character - take one, the door in the cellar is locked. Bring a rope as well.
Step 2 Down through the cellar
Go down the stairs at 32826,31957. On floor 8 unlock the door at 32824,31969 with key 5010 and go down the trapdoor at 32822,31970 behind it. Drop into the holes at 32825,31968 (floor 9) and 32833,31979 (floor 10), use your rope at 32843,31986 (floor 11) and drop into the hole at 32853,31993 (floor 10), where skeletons live. On floor 11 walk to the trapdoor at 32875,31977.
Step 3 The level 50 gate and the Black Knight
On floor 12 pass the gate of expertise at 32875,31974 (level 50) and walk north past beholders, a skeleton and a wyvern to the magic forcefield at 32874,31941. It takes you into the round room of the Black Knight on floor 11, where beholders and scorpions help him.
Step 4 Crown shield and crown armor
The two dead trees in the south of the room hold the rewards: the crown shield at 32868,31955 and the crown armor at 32880,31955, each with its own quest number, so one character takes both. The magic forcefield at 32874,31955 between them takes you back behind the gate on floor 12. On the way up climb the ladder under the trapdoor at 32875,31977, use your rope under each hole you dropped through, drop through the hole at 32843,31986 on floor 10, and climb the ladder at 32822,31970 (floor 9) back into the cellar.