This is "Artist Proof" Mauna Loa Drum mug by Babalu. I had highest bid for Tiki-Kate's auction at Oasis 10.
Collector Gallery
Tiki Mug Design
Mauna Loa Drum Mug
in 3 collections
This tribute mug to the Mauna Loa in Detroit Michigan is based on the PNG drum mug on one of their menu covers. It has a brown glazed exterior and a white interior. The white glaze continues over the lip of the mug where the "hide" stretches over the top of the "drum". There is also a more detailed custom version of this mug.