Snow on the Switchback Great Wall. Switchback Great Wall, 2020/11/21 Snow was falling as we started this hike, and it was still falling as we finished a fun – but tricky! – hike up to the Switchback Great Wall—see 22 photos. Were you on this trip? How did you like it? We'd love to hear from you. • Send us feedback • Review it on TripAdvisor • Share this page on Facebook Photos from Cici and Damian.