What's it called, how's it done?

[birba]

all I have is this picture, not the actual link to smokingpipes.com

do you guys think the black end piece on the bottom is just glued on or does it have come kind of mortise and tenon?
how do you approach this shape? shape first, drill later?
is that pipe huge? or does it just have a pretty small tobacco chamber?
the little metal insert is obviously not round, how do you build it?

[Massis]

looks a bit like the new vauen carbon... Pretty pipe!

The vauen at leat has a normal chamber and weird drillling angles, but no cap on the bottom. Forthis one my guess would be intersecting drafr holes connected from that black cap...

[birba]

Oh yea, it didn't occur to me that the cap might actually have a function.