Is there a way to make a menu drill down through a tag hierarchy?
For example lets says that i'm working with maps. (I'm not)
We might have the following tags depending upon the geographic location in the map.
Americas (global region)
North America (continent)
I'd like a menu to be able to drill down through the 7 continents, dozen countries in norte america, 50 state in the US, hundreds of cities in Texas, etc.... eventually showing every post at whatever menu level we're at. So for example the if were at the USA country level and we choosing whether to look at a post of Texas, or keep drilling down to the county and city level we need to be able to do that.
I'd like to do this all off tags.