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Grim's Ditch: section N of Blythwood House

1 ha

📷 Marathon · Geograph · CC BY-SA 2.0

Plan your visit

WildlifeBirdsSeasonal
Free entryDogs welcome1 ha

Getting here

51.60260, -0.39173

Open directionsv
Google Maps↗Driving directionsApple Maps↗Driving directionsWaze↗Live driving navigationGoogle Transit↗Bus, rail or tramApple Transit↗Bus, rail or tram

Visiting this summer

Seasonal nature notes and what to look for now

  • ☀️June — long evenings and clear skies; one of the most rewarding months for a late visit
  • ✦Historic character is a year-round quality here — summer brings its own atmosphere to the setting
  • 🛝Playground 273m away — built-in entertainment for younger visitors alongside the wider site

Good to know

  • £Free to visit — no entry charge
  • 🐕Dogs welcome
Bike parkingParkingPlayground

Best for

6 activities

Wildlife

Multi-group wildlife — Amphibians, Birds, Mammals, Reptiles; Multi-group wildlife — Amphibians, Birds, Mammals, Reptiles

Free

Bird watching

Birds — Pochard, Shoveler, Wigeon +47 more · last seen 2026; Birds — Pochard, Shoveler, Wigeon +47 more · last seen 2026

Free

Seasonal nature

Plants — Himalayan Balsam, Cuckooflower, Honeysuckle +19 more · last seen 2024; Plants — Himalayan Balsam, Cuckooflower, Honeysuckle +19 more · last seen 2024

Free

Insect spotting

Insects — 7-spot Ladybird, Roesel's Bush-cricket, Marmalade Hoverfly +27 more · last seen 2026; Insects — 7-spot Ladybird, Roesel's Bush-cricket, Marmalade Hoverfly +27 more · last seen 2026

Free

Heritage

Historic site

Free

Foraging

Deciduous woodland — fungi, berries and wild garlic; Plants — Beech, Smooth Hawk's-beard, Ground-elder +3 more foraging species

Varies

Trails nearby

Within roughly 5 km
🚶

Walking

21 signed routes nearby

Signed route nearby
Grand Union Canal WalkWalking route

Napton to Coy Carp section

Named routeRegional walking route
Harrow Weald Common Nature TrailWalking route

Short walk. Orange waymarking http://www.harrowncf.org/Harrow_Weald_Nature_Trail.pdf

Named routeLocal walking route
Celandine RouteWalking route
Named routeLocal walking route
LOOP link to Moor Park UndergroundWalking route
Named routeRegional walking route
Capital Ring link to Harrow-on-the-Hill stationWalking route
Named routeRegional walking route
🚴

Cycling

45 signed routes nearby

Signed route nearby
Route 6Cycling route
Named routeRef 6National Cycle Network
Route 61Cycling route34 km

Route 61 travels from Maidenhead to Hatfield, Welwyn Garden City and Hertford before arriving near Hoddesdon.

Named routeRef 61Length 34 kmNational Cycle Network
LCN+ link 89Cycling route
Named routeRef +89
LCN+ link 88Cycling route
Named routeRef 88Local cycle route
LCNCycling route
Named routeLocal cycle route
LCN+ link 88Cycling route
Named routeRef 88Local cycle route

Wildlife to spot

Photos

Ditch on Montesole Playing Fields at Pinner Green

📷 Marathon · Geograph · CC BY-SA 2.0

Ditch on Montesole Playing Fields at Pinner Green

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Nearby places

Useful places within 5 km

🌱Pinner Memorial ParkUrban park1.2 km→🌱Harrow Recreation GroundUrban park3.8 km→🌱Oxhey ParkUrban park4.7 km→🌱The Grove Open SpaceUrban park4.7 km→🌱The Grove Open SpaceUrban park4.7 km→🌱Pinner Memorial ParkUrban park1.2 km→

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