Dartrey Forest (sometimes Dartrey Estate or Dawson Grove Estate) is a forest and estate near Rockcorry in north-west County Monaghan, Ireland. It was formerly part of the Barony of Dartrey and was the country estate of the Dawson family, who had the title Earl of Dartrey from 1866 to 1933.The once vast estate was centred on Dartrey House which was demolished in 1946. The forest's main gate is only a few miles from Cootehill. It is currently managed by Coillte as a commercial forest. The Forest is partially bordered by what is known locally as 'the Famine Wall', which stretches halfway along the road from Cootehill to Rockcorry (the R188). Just across the R188, the main Cootehill to Rockcorry road, near the main gate into the forest, is the Dawson Monument, a fine neo-Classical column designed by James Wyatt and erected around 1808. The column, just outside the forest, stands on the roadside.
The landscape of the forest and surrounding area is particularly beautiful, being composed of a series of lakes joined by the Dromore River. A description from 1844 states "the banks of the Cootehill (Dromore) River, for several miles above the town, furnish a constant series of very rich close landscapes, chiefly of the class which may be designated languishingly beautiful." The lakes have a number of crannógs which provided traditional fortification until, possibly, the late 16th century and perhaps helped facilitate trade with settlements up stream.
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