Nested / Hierarchical Galleries

Does it support nesting of galleries? There's a demo of gallery with tree navigation so it must be true? For example we have an photo archive which consists of years and months. So will it work if, for example, I create the following gallery structure:

Main Archive -
------------ 2010
------------ 2011
------------ 2012
----------------- Jan, 2012
----------------- Feb, 2012
----------------- Mar, 2012
etc.

Basically 3 levels - Main archive, year, month.
Main archive displays thumbs of all years in it, then when clicked, for example 2012, it will show all thumbs of all months in it, and finally each month will display all it's photos.
Is this possible?

Thank you.