Julia Glover Flat 28. View east across Julia Glover Flat on the far south side of Medicine Lake volcano. Basalt of Giant Crater (see caption for Photograph 26) forms rocky slope where it is faulted up to the east by the north-south-trending Mayfield Fault. Major powerline carrying electricity from the Pacific Northwest crosses the fault at this location. Photograph by Julie M. Donnelly-Nolan.