This photo shows the entrance to the cave of the La Lie quarry, in the commune of La Roche-Vineuse (Saône-et-Loire) which houses the seismological station OGRV. Exploited since Gallo-Roman times, this limestone quarry is equipped with a 120 QA sensor from Nanometrics, placed in the underground cavity. This site was instrumented in January 2019 as part of the Résif-CLB project (sensor change and replacement of the Taurus digitiser by a Centaur (Nanometrics). The GPS antenna for satellite reception had to be moved some twenty metres towards the entrance to the cavity for better reception, as did the communication equipment (Modem 4G NB1601-NetModule) for real-time data transmission to the Résif-DC data centre. The site, operated by ISTerre, i...