Activities at Birtley Estate Fishing The horseshoe lake with 500 yards of bank contains mainly brown trout and some rainbows up to 7lbs. For Children Naturedayz provides a unique experience encouraging children to uncover wildlife in the woodlands and hedgerows that surround us. Green Wood Works Surrey Hills Green Wood Works is a dedicated place for people to experience and learn traditional wood working skills. Charcoal Making Courses in Charcoal making will soon be available on the Birtley Estate. Watch this space! Badger Trail The Badger Trail will take you and your children on a journey of discovery around the parkland and woodland of the estate. Beekeeping Come and learn more about the craft of beekeeping. Courses will be available soon.