What we do Conservation Our reserves Trigon East Ownership: ARC Designation: SSSI, SAC, Ramsar Restrictions: Open Access Land, please keep dogs on a lead. Access: Sugar Hill Grid ref: SY 88166 91118 The Reserve Trigon East is 4 hectares of dry heath with an exposed dry sandy substrate. The reserve is a continuation of South West Hyde (Forestry Commission/ARC) and an excellent place to get easy views of sand lizards. All six species of reptile can be found on the reserve. Trigon East was taken on from the British Herpetological Society in 2001. Species you might spot: Reptiles. Sand Lizard (Lacerta agilis) Common Lizard (Zootoca vivipara) Slow-worm (Anguis fragilis) Grass Snake (Natrix natrix) Smooth Snake (Coronella austriaca) Adder (Vipera berus) Birds. Dartford Warbler (Sylvia undata) Nightjar (Caprimulgus europaeus) Stonechat (Saxicola torquata) Tree Pipit (Anthus trivialis) Hobby (Falco subbutteo) This is by no means a comprehensive list of species on the reserve.