The images in the Stock Images gallery can no longer be downloaded from here. They appear on the following photo agencies:
Alamy Dreamstime Adobe Stock 123RF Shutterstock Picfair Eyeem
Conkers, the fruit of the horse chestnut tree, some in their prickly cases.
The prickly conker cases which are the fruit of the horse chestnut tree, Aesculus hippocastanum.
