Derrycunnihy Wood, Nature reserve and native oak forest in County Kerry, Ireland

Derrycunnihy Wood is a 336-acre national nature reserve in County Kerry, owned and managed by Coillte within Killarney National Park. It is a native sessile oak wood with dense mosses and ferns, and it also takes in lake shore and areas of bog.

Derrycunnihy Wood was legally protected as a national nature reserve by the Irish government in 1989. The reserve, about 336 acres in size, is owned and managed by Coillte, the Irish state forestry company, and lies within Killarney National Park in County Kerry. Its sessile oak woodland is considered one of the oldest and most natural of its kind in Ireland.

The name Derrycunnihy is Irish for 'wood of the rabbits', yet no rabbits live in the reserve today. The woodland itself is regarded as one of Ireland's oldest and most natural native sessile oak woods, and as the country's best example of a damp-climate oceanic wood, with dense mosses and ferns.

Marked trails are available for visitors with varying fitness levels and remain accessible throughout the year. It is wise to bring appropriate clothing for changeable weather and damp ground conditions.

Two deer species shape the woodland in different ways: Japanese Sika deer live year-round while native Red deer visit only during winter months. These species have distinct impacts on vegetation growth and the forest's appearance.