We arrived back on the AstronomyTowerbecause that'swhere the Mark was.... Dumbledore wasill, hewasweak, butIthink he realizeditwasatrapwhen we heardfootstepsrunning up the stairs.
The resident mage is a student of astronomy and planetary science, so I decided the tower should have its own Foucault pendulum, attached to the 7th floor ceiling and swinging freely through open spaces in each floor below.