·Direct
Minerva’s stone was set against the door of the Naiad cavern.
See evidence text
“Therewith she went down into the cave to look for the safest hiding places, while Ulysses brought up all the treasure of gold, bronze, and good clothing which the Phaeacians had given him. They stowed everything carefully away, and Minerva set a stone against the door of the cave. Then the two sat down by the root of the great olive, and consulted how to compass the destruction of the wicked suitors. ”