Heartwood: Befriend a Tree

First release on Google Play: befriend real trees, an ink engraving and an illustrated key of twelve species, a ring for every meeting at the tree, a hug with a slowing heartbeat, the bark's voice, rubbings, pressed leaves, a timelapse chronicle, notes in the hollow opened a year later, a grove with the mycelium underground and rare calls from the trees. English and Russian.