Some of the most coveted mushroom species don't grow well in captivity, which is why people roam the forests to find them. Or maybe it's because roaming the forest is a beautiful experience in itself. It certainly seems so when you see the photographs taken by Osma Harvilahti in the woods near Helsinki, Finland. Please note that the legality of mushroom hunting varies by country. Link 

(Image credit Osma Harvilahti)