Location of Cabin Air Filter in '98 Passat?

Greetings!

Anybody know where the cabin air filter is located on a '98 Passat?

The last time it was checked was probably a good 50K miles ago, and
I'd hate to have to run to the dealer just to have them check it.

I did a cursory search under the hood, in the glove box, etc. (FWIW, the
cabin
air filter on our mini-van is easily accessed through a small door in
the glove box).

TIA

Tim

Tim Churchill                                   Framingham, MA  USA
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2001 Oldsmobile Silhouette Premiere     a.k.a.    "Vista-Vision Cruiser"
1998 VW Passat Wagon GLS                a.k.a.    "Der Kinderwagen"