"Tarkol has... No, I don't have any" replied Kalorn. Darnation. No one had pitons?!?
Kalorn saw Mord give him a sign, and Kalorn knew what he wanted. As the otherworldy spell expired, Kalorn gestured sharply with his left hand. A new sphere of darkness appeared in its place - not as big, but large enough to keep the corridor blocked. Occasional tentacles could be seen at the surface, and faint, disburbing sounds came from it.
Action 2X: Cast silent image with misty vision, then enhance it (the sounds) with prestidigitation.
OOC: What does Kalorn see in the kobold room north of us in the "gap" between the spells (ie the switcharoo may not be seamless). Any survivors etc?