Fracturing, stick-slip movements, water flow, seepage and other natural events related to the glacial and periglacial environment release energy in the form of elastic waves, also known as microseismic events. Microseismic activity represents therefore a useful tool to study glacier dynamics as it can provide information about their mechanical and structural variations. For this reason, a network of passive seismometers has been installed on the Gran Sometta rock glacier (Aosta Valley, NW Italy) since July 2020 to continuously record ambient seismic noise and detect microseismicity. As a first step of this study, microseismic signals generated in and around the glacier have been detected in the continuous noise recordings through a short-time-average over long-time-average (STA/LTA) algorithm.