At one of the two ends of the V-shaped segment we sent one of the drones inside the pipe and used the second one to film from outside (and help shed more light too as it was pretty dark at the depth of 70-80m). 8/17 pic.twitter.com/xqgPNuTJAG

— 𝙺𝚘𝚜𝚝𝚊𝚜 𝙺𝚊𝚕𝚕𝚎𝚛𝚐𝚒𝚜 (@KallergisK) November 21, 2022