There are several alternate areas you can reach from within the marble gallery once you have the correct items.
Black marble gallery sotn.
It is accessed from the alchemy laboratory from the left side of the map and you can follow a long corridor to the right to reach the outer wall.
Home games castlevania.
The central clock is also flanked by guardians the toughest regular enemies in the game so it may be best to steer clear of this area until you re ready.
The center of the black marble gallery is once again important it s the site of the final battle.
The marble gallery is the third stage in symphony of the night.
The theme music of this area is finale toccata.
The black marble gallery is connected to the reverse outer wall to the left the reverse entrance and necromancy laboratory to the right death wing s lair below and the reverse caverns above.
Be careful in the long three level hall in the bottom left part of the marble gallery passing through will unlock a path to the entrance and earn you a 250 reward but there are several nasty enemies you need to get by.
Symphony of the night marble gallery head right and destroy the axe lords.
Symphony of the night walkthrough marble gallery.
It may not be worth the effort to do this right away.