Caches in Nature Reserves and Sites of Special Scientific Interest (SSSI)
The guidelines state, "In addition, there may be local regulations already in place for certain types of parks in your region (state parks, county preserves, etc.). There are many local caching organizations that would be able to help you out with those regulations".
The GAGB guidelines for placing caches in the UK
state,
"No cache should be placed in such a way as to risk damage or
disturbance to any Site of Special Scientific Interest (SSSI)....." and
"When placing a cache, the onus is on the placer
to seek the permission of the landowner."
There are national nature reserves around the country as well as locally run
reserves. They may also be (or include) SSSI's. Caches on such reserves or
SSSI's will not be published unless proof of permission is provided.
National nature reserves are indicated on the 1:50,000 Ordnance Survey maps with
a blue bird symbol. Local nature reserves
are not always shown on the maps and
SSSI's are not shown either. If you are in doubt about the location you are
planning to place your cache then use the interactive websites shown below. The Natural England interactive map shows both national and local reserves and SSSI's and may give contact
information. Here is an example of an SSSI at Middlehope near Weston Super Mare - Middlehope SSSI. The MAGIC map is more detailed and very useful as it shows many different types of land management from many different organisations.
When submitting a cache in such a location you should add the permission
information as a 'Note to Reviewer' log on the cache page for the reviewer
to see. The information should include the name of the person who gave
their permission and their telephone number or email address. The text
of any email correspondence or letter giving permission should be copied there
too. Please note these logs are not visible when the cache is published.
Permission does not apply to 'question to answer' stages of Multicaches
(no physical container) which may involve visiting reserves. However you should be aware of the guideline in the 'Off limits' section, "Caches placed in areas which are highly sensitive to the extra traffic that would be caused by vehicles and humans (examples may include archaeological or historic sites)." This would apply to a 'question to answer' if a lot of people are likely to trample the habitat finding an obscure signpost!

You should also add the permission information on your cache page description. It not only tells finders that the cache area is OK to go to but new cachers finding your cache can see that permission may be needed for certain locations and will consider that when they place their first caches. It is of course a courtesy to the organisation or landowner who gave permission to acknowledge it. Something like, "Cache placed with the kind permission of the wardens of the reserve" or "Cache placed with the kind permission of the manager of the local National Trust office". Don't put in peoples names, the full permission details should be added in the note to the reviewer when you submit the cache.
Note: the links below to the MAGIC and CCW interactive maps don't take you directly to the maps but to another page on this site which explains how to use the maps.

Links will open in a new window or tab
*Thanks to Gary and Jane for the Streetmap link.
