Escursione Slowbike CAI Sabato 29 Maggio: http://www.slowbikeap.it/Portals/0/documenti/2021/20210529%20san%20martino%20ceppo/20210529%20san%20martino%20ceppo.pdf
Anello San Martino-Ceppo (SICAI MTB); album fotografico: https://photos.app.goo.gl/no1KJQdsy8C6W2Ry9