The reserve is one of the few managed habitats on Anglesey specifically monitored for the protection and observation of native red squirrels.
The woodland floor is home to a notable population of wild garlic and bluebells that bloom in late spring.
The valley was historically important for the local milling industry, with remnants of old water-powered infrastructure visible along the river.
The Afon Cefni, which runs through the reserve, is a key watercourse flowing toward the Cefni Reservoir and eventually the Malltraeth estuary.
Nant-y-Pandy, locally known as The Dingle, is a 25-acre woodland nature reserve situated in the heart of Llangefni on the Isle of Anglesey. The site is designated as a Local Nature Reserve and functions as a vital green corridor along the Afon Cefni river. A network of boardwalks and pathways provides access through the ancient semi-natural woodland, which serves as a habitat for red squirrels. The valley floor features steep sides that create a microclimate supporting a diverse range of ferns and mosses. It is a significant site for biodiversity, linking the urban center of Llangefni to the Llyn Cefni reservoir. The reserve is managed by the Isle of Anglesey County Council, which maintains the infrastructure for public walking.
The elevated boardwalk sections overlooking the river where the woodland canopy creates a natural tunnel.
Wear waterproof footwear as the woodland floor and boardwalks can become slippery or muddy after rainfall.
Keep a quiet pace to increase your chances of spotting red squirrels, which are most active in the early morning.
Use the wooden benches placed at intervals along the path for bird watching near the riverbanks.
Do not attempt to walk the trails during periods of heavy flooding, as low-lying sections near the river can submerge.
Keep dogs on a lead to protect wildlife, stay on marked boardwalks to prevent erosion, and remove all litter.
