So Many Mt. Fujis (Fuji-san ga Takusan, ふじさんがたくさん) is the second episode of the Heya CampΔ anime.
Finding their first stamp in the rally, they then head to eat at the café.
Ezo Fuji is one of many mountains that look like Mt. Fuji found across Japan. Chiaki lists Tsugaru Fuji, Nanbu Katafuji to Nikko Fuji among others.
It has stopped raining though the mountain before them is still not fully visible. This does not stop them outlining the top with their fingers.