Three gates and some fencing on the route running through the Glion Gill plantation area, above Little London, have been damaged.
The land is owned by the Forestry Division. and is used by a tenant farmer.
It's open to the public for walking and bicycles, but not motor vehicles. Officers think the damage was caused by a four-wheel drive.
If you have any information, you can call Peel police on 842208.
Important gaps in Manx Care staffing pointed out
CEO says deficiencies added extra financial pressures to the healthcare provider
Could we be in for a warm and sunny TT?
Ronaldsway Met Office says the general consensus is yes!
Manx Telecom fully acquired by JT Group
Parent company of Jersey Telecom says it will accelerate investment in 5G, fibre and digital services
Planning approval for temporary waste storage for Balthane Roundabout scheme
DOI says an application for permanent solution is underway
Local vendors 'really proud' of their part in Fury wedding
The event featured in countless articles in the UK press