in 3rd mission when all monsters goes toward Black cave - i cannot find what happens if you draw mythos card where gate open on black cave?
1) gate opens as normal (and if its mid game we are doomed 
2) monster surge
3) no gate opens
4) draw next mythos card?
post i found answer - it appears as normal 
Anarin said:
in 3rd mission when all monsters goes toward Black cave - i cannot find what happens if you draw mythos card where gate open on black cave?
1) gate opens as normal (and if its mid game we are doomed
2) monster surge
3) no gate opens
4) draw next mythos card?
If a gate is open on the Black Cave, an Investigator may move to the Black Cave to enter the gate. If they do so they must still pass the fight check, as Tsathoggua's minions race to feed them to the famished ape. If they seal the gate, monsters still move as instructed above.
Here's the link to the FAQ thread: www.fantasyflightgames.com/edge_foros_discusion.asp