Dandy dwarf's hammer flies (
d20, 2, MISS) but hits the end of the hallway ineffectually. It returns to his outstretched mitt.
You examine what was thrown on the ground and it is a group of caltrops, their points ready to pierce your boots.
Had you raced after the cultists, you likely would have wounded your feet gravely. Knowing they are there, you are able to walk through without injury, you think. They are only in a small area just north of where the cultists emerged from the east: you should be able to get through and pursue without problem.
To the west you can see the hall continue, with a door nearly halfway down.
Actions?