At Dieter's suggestion (and because the LL is getting impatient), the party heads leftward.
It doesn't take long before you reach another intersection, this time with three branches. No sound nor air currents are detectable from any of the passages, no matter how hard you pay attention. Acquaire states that she's kind of tired and hungry.
BTW, I didn't make this clear earlier but you left your horses at the cave mouth -- they didn't want to head down the stairs. So you're all on foot.
Actions?
Hit points and marching order
Grimes 46/46
--Dandy 33/33 < CLW x6, Speak With Animals, Hold Person, Find Traps, Augury, Silence 15', Remove Curse, Dispel Magic, CSW, create food and water >
Castinus 34/34
--Furuk 59/59
Dieter 31/31 < magic missile x2, sleep, continual light, stinking cloud, slow, Evard's black tentacles, arcane eye >
--Acquaire