Vivaja” is an amazing  fantasy children and young adults story writen by Wioleta Piróg, and published by Za Górami Publishing House.
The story takes place in an imaginary (or maybe not?) amazing place called Vivaja.
A boy name Staś accidently founds himself in the middle of an unknown land, and while he tries to find the way out he meets a lot of creatures, and makes new friendships.