Mountains Made of Chalk, Fall into the Sea, Eventually. Chalk artist Genna Panzarella shares with us her painting of an 8×10’ chalk mural of Mt. Tamalpais as it was when it was whole in this video that is a meditation on the ephemeral nature of being. If you would like to learn more about the abandoned Air Force base atop Mt. Tamalpais in the San Francisco Bay area of California then watch this short documentary about the “The Invisible Peak”.