Right before Mitsuhide rebelled against Nobunaga, he made a visit to Mt. Atago.
Chronicle of Lord Nobunaga (p. 466)
"On the 26th of the Fifth Month, Koreto Hyuga no Kami departed Sakamoto for the Chugoku campaign and arrived at his residential castle of Kameyama in Tanba. The following day, the 27th, he went Kameyama on a votive vist to Mount Atago. Koreto Hyuga no Kami spent the night there in solitary meditation."
Nobunaga no tame!