Ramapo Mountain Winter Solstice. Slides of Nature Photography with Live Musical Accompaniment by Geoff Welch. Harmony Hall Curator Geoff Welch has captured the expansive and the close-up beauty of the Ramapo Mountains in photographs and musical compositions that will be presented in the historic parlor of Harmony Hall (1848). Other activities will happen indoors and on the grounds, weather permitting. Refreshments will be served.