This dataset contains video and temperature data acquired with the MESOCOSME, deployed at the Montsegur edifice during the Momarsat 2022 cruise as part of the EMSO-Azores observatory from 19 to 24 June, 2022. Data consist in 6,697 pictures. Pictures were taken every 2 seconds during 2 minutes, every hour. The module was deployed autonomously at the base of the Montsegur edifice. Size of images: 3840 x 2160 pixels. The full dataset is 20.3 GO. Temperature data were acquired with 7 iButtons Thermocron along a gradient of fluid influence every 2 minutes and include 3,628 measurements. Location :  - N 37°17.282 - W 32°16.536 - Depth : 1703m