Add marker to map:              help
Marker Notes X

To add your own marker to the map, click on the appropriate symbol below the map, then click again at the location required on the map (using the crosshairs).

Logged-in registered users only...
When you add a marker, a pop-up box should then appear on the map - fill in the elevation (if known) and a brief description of your marker, then click [save].

To view previously saved markers which fall within the bounds of the map, click the show link (you may need to repeat this if you zoom or pan away from the current position on the map).

Name:Horsea Island
Hill number:19222
Height:41m / 135ft
Parent (Ma):2909  Butser Hill
RHB Section:42: South-East England & the Isle of Wight
County/UA:Portsmouth (UA)
Maritime area:Hants & Dorset - Portsmouth & Wight
Catchment:Minor Rivers only (South)
Class:Tump (0-99m), SIB
Grid ref:SU 64184 04539
Summit feature:no feature
Col:5m  SU638049  
OS map sheet(s):(1:50k) 196
(1:25k) OL3 OL29E 119
Survey:Abney level
Comments:New SIB August 2016 - no longer an island today.
Change log:show changes for this hill entry
GPS data:show GPS entries for this hill

Show Map
(Please be considerate with your usage of the OS map pages, as there are daily limits)

View on: Geograph  OS Maps  Streetmap  Magic  NLS  OSM

Full screen map
Switch to Bing Maps view
(Please be considerate with your usage of the Full Screen/Bing Maps pages, as there are monthly limits)

Resize map: portrait / landscape / reset

Map Help, This page uses the Ordnance Survey OpenSpace API
which does not include Explorer (1:25000 scale) mapping.

Show/hide GPS File for mountains/markers shown

Show/hide GPX File for mountains shown

No summit photo available
Hill summit
No portrait photo available
Hill portrait

To contribute a summit or portrait photo for a hill
please contact the hillsummits website

N.B. Some hill summits are on private property or on land where there is no public right of way.  Permission should be sought from the landowner where access to a hill summit is through private land.
Please report via the contact page any logs you see below which describe or encourage acts of trespass.  Please quote the hill number and hill name.

Logged Descriptions  (logged by 17 users)ByDate of Ascent
Dusk walk on path from Port Solent. Reasonably pleasant.Herbert Anchovy04/09/2019
Parked in the large cp at the retail park on Marine Keep. The authorities are trying really hard with this tip and we are rewarded with considerable birdlife already. Portsmouth needs a bit of height! Well done, Pompey.Campbell Singer25/05/2019
Great views over Portsmouth on a lovely evening, with boat moored at Port Solent Marina. Trees are growing fast, more being planted and work ongoing. More a tump than a Sib, it seemed?Denise 28/04/2019
Easy access from the WNW. Horsea Island Country Park. Lansdcaped landfill site with well established grassy summit. Sides currently being planted with trees. Fine views of Portsmouth and harbour.RichardM28/04/2019
The new much advertised La La Land film was playing at the packed cinema below whilst outside I found my own La La Land as I disappeared into the welcoming bubble of darkness on a night ascent of this strange new hill. No trees, no bushes, no people, just vent pipes sticking out. A small oasis of empty calm surrounded by the rush of 24 hour lights and noise. An embryonic path was being laid leading to the top - for future La La baggers. Thinking about it, La means pass in the Himalaya so maybe that is the real La La Land with its many passes and not here after all? Doolally land here instead maybe?Chris Pearson18/01/2017
Parked in large car park then around the back over minor fence before being challenged by man in van on the road. He gave me ten minutes to bag the grassed over former tip.Dugswell207/09/2016
3 mounds S and E of the recycling centre, all ex-landfill with numerous vent pipes protruding. Middle one is clearly the higher of the 3, measured them at 27m, 38m and 31m. With a 3m col there is potential here for a tump.jonglew31/08/2016
Bagged prior to meeting SIBMeister Holmes for our pre-arranged visit to Whale IslandRHW26/02/2016
Good to be able to log this one as it was my historic map research that led to it being added as a SIB.Swindon Bagger22/09/2015
done while serving in the Royal Navy 1965-1972 date est;joseph mitchell20/07/1967
andrew brown27/05/2020
Alan Whatley25/03/2019