The passage can be seen to continue ahead for about 40ft before being joined by another from the left. A further 30ft beyond that intersection another door is dimly visible--also on the left side. And the passage continues into the darkness beyond that...
Leudigar shrugs, spits on the door, and continues down the passage. When he gets to the three-way intersection, he turns left instead of continuing straight.
Leudigar proceeds cautiously, some 40ft ahead to reach the intersection, wherein he peers down the infringing passageway to his left. In the shadowy dimness there, he barely makes out another two doors about 30ish feet further down; one either side. The door on the right hand side is slightly nearer... the passageway itself continues on into the dark.