The lineup has been revealed for the 2020 ArcTanGent Festival. The event take place at Fernhill Farms near Bristol, UK on August 20-22 and it will feature: Opeth, TesseracT, This Will Destroy You, Amenra, Ihsahn, Perturbator, Rolo Tomassi (performing “Grievances” and “Time Will Die And Love Will Bury It” during two separate sets), Earthtone9, Giraffes?…