LONDON (AP) — In the heart of north London lies the ancient Queens Wood, a green forest hidden away in a metropolis of more than 8 million residents. The sounds of the city seem to fade away as a group of children plays in a mud kitchen, pretending to prepare food and saw wood.

These aren’t toddlers on a play date — it’s an unusual outdoor nursery school, the first of its kind in London, following a trend in Scandinavia, Germany and Scotland. It allows local children to learn, and let their imagination run free, completely surrounded by nature.