Oak apple or oak gall is a type of gall caused by gall wasp

---

Oak apple or oak gall is a type of gall caused by gall wasp. Oak galls have been used in the production of ink since of the Roman Empire.

---

Size: 6000px × 4000px
Photo credit: © Michal Boubin / Alamy / Afripics
License: Royalty Free
Model Released: No

Keywords: apple, close-, day, daylight, detail, gall, ink, insect, iron, larva, leaf, leaves, macro, natural, nature, oak, people, product, secretions, tannin