Add marker to map:              help
My Preferences X

(N.B. If you are signed in, your registered preferences will take precedence)

...OS Grid Reference for you home location, e.g. TQ336805

Click here to obtain your OS Grid Reference using your postcode, and copy the Grid Ref given in the "LR" field


(Your preferences will be stored locally as cookies)

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).


The Main SIBs

A SIB is a Significant Island of Britain.  The complete list of SIBs and Siblets comprises over 1100 islands. Only around half of these are categorised as "Main SIBs".  The qualification criteria are to be an island with at least 30 hectares of area or a prominence of 30m.  Islands which are "Vertical SIBs" (sea stacks etc) are excluded from the Main SIBs.

(Main SIBs appear as Class=SIB on this website)

Show all hills within map bounds
...where drop at least 30m
...with no ascent logs recorded by anyone

Map Help

Switch to Ordnance Survey OpenSpace view

My Progress
I have completed 0 (0%) of 566 SIBs of Britain [Map*]
0 (0%) of 464 Scottish SIBs [Map*]
0 (0%) of 67 English SIBs [Map*]
0 (0%) of 35 Welsh SIBs [Map*]

(* please note that map may be slow to load)

League Table - compare your progress with other members of this site.


Thanks to Alan Holmes for use of his SIB data.  You can request the the full SIB data package by contacting Alan (alanholmes3 at virginmedia dot com).

Show/hide GPS File for SIBs

Show/hide GPX File for hills shown