Iolo Williams tunes in with pupils from Ysgol Gynradd Dolgellau as the television wildlife expert launched the new MP3 audio trails at Coed-y-Brenin Forest Park yesterday (Thursday).
Forestry Commission Wales has created more than five miles of audio trails which bring the Welsh Assembly Government-owned woods to life in a whole new way.
Visitors can now download the recordings from the Forestry Commission Wales website onto their MP3 players or Ipods before leaving home to enjoy walking along any of four trails in the heart of the Snowdonia National Park.