Amber fort to Jaigarh tunnel

When we visited Amber Fort in March 2008 I seem to remember seeing a small door which pointed to an underground passage which led up to Jaigarh fort. Is there such a thing and, if so, does anyone know the opening times?
We are going back to Jaipur in February 2010 and I would like to use this passage if it exists!
Thanks

I've just been to Jaipur days before.Yes, there is a tunnel leads to Jaigarh fort, but you have to be the King to use that tunnel.

Hi...yes there is a tunnel but only small portion of it has been opened for Public & as per records, part of it was a covered tunnel(which led you upto the foothills) & then it was an open passage upto to the Fort(open passage is still visible from the Fort).

Thanks Seasahil. Glad to get some detail at last

Pleasure indeed!!!You can surely try out a climb up & walk around the protective wall which used to surround the Amber town(some parts of the same have been restored recently & make for an interesting walk).