Vargadis

A small question about the Sewage SCA.B, tried to find answers online and in the patch-note but I don't seem to find anything valuable to my question so I thought of asking here. I can't reach it, the Sewage entrance is blocked by a boulder. I have done the Pond-quests to unlock the dome. I've restarted a game in creative mode and the boulder is there too. The SCA.B shows up on my scanner weirdly enough but I can't for the world get to it. Tried the new Photomode and managed to glitch my cam under the boulder once, and the SCA.B just lays there in the end of the tunnel. If someone could just tell me if this is intentional from the devs or if I need to unlock something for the entrance to unblock.