Rick Aster on the crater rim of Mt. Erebus. Servicing batteries at the E1 seismic station. A-Star helicopter at the Hooper's Shoulder seismic station. The lower Erebus hut flying the New Mexico state flag. Anorthoclase feldspar phenocrysts in a weathered lava flow near the lower Erebus hut. Bell 212 helicopter ready to take a load from the lower Erebus hut to McMurdo station. Mountain tent (with snow wall) in front of the Mt. Erebus summit. A-Star helicopter at the Bomb seismic site. Antenna for transmitting seismic data from Hooper's Shoulder back to McMurdo station. A-Star helicopter unloading at the Abbot Peak seismic site. Abbot Peak on the flank of Mt. Erebus. McMurdo carpenters building the new lower Erebus hut. McMurdo carpenters building the new lower Erebus hut. More progress on the new lower Erebus hut. Interior of the now vacant upper Erebus hut.