SB 10.20.28
kvacid vanaspati-krode
guhayam cabhivarsati
nirvisya bhagavan reme
kanda-mula-phalasanah
Translation:
When it rained, the Lord would sometimes enter a cave or the hollow of a tree to play and to eat roots and fruits.
Purport:
Srila Sanatana Gosvami explains that during the rainy season bulbs and roots are very tender and palatable, and Lord Krsna would eat them along with wild fruits found in the forest. Lord Krsna and His young boyfriends would sit in the hollow of a tree or within a cave and enjoy pastimes while waiting for the rain to stop.