Work is taking place at South Barrule Plantation to remove storm damaged trees.
DEFA expects the work to take several months to complete, with fencing and public notices in place to show any diversions or restrictions.
The department said it's aiming to keep the main forest roads open, but some restrictions will apply at times.
The Viking mountain bike trail will be closed throughout the works.
South Barrule's outdoor activity businesses will operate as normal.
MHK to quiz minister over bus facilities
What progress has been made with bus facilities in Douglas?
Harbour 2 Harbour entries now open
Registrations are now open for a charity walk across the South of the Island.
Castle Rushen designs 'ongoing', says minister
The Department of Education, Sport and Culture says there's no finished design for the new Castle Rushen High School yet.
Two sailings cancelled, a further two at risk
The Steam Packet Company says it's cancelled two sailings today, with another two at risk.
Will the airport get a facelift soon?
An MHK wants to find out if there are plans to revamp the airport.
Clocks go forward tonight!
Don't forget to put your clocks forward tonight!
Possible oil price hikes prompt Keys question
An MHK wants to know what contingency plans are in place if oil prices spike.
Government considers tourism tax to boost hospitality
The Department for Enterprise says it'll continue looking at how a possible tourist tax would work - but doesn't have any firm plans yet.
