Hey everyone, just a quick video showing how to get to the Disease Research Facility for this achievement. There are 3 entrances to the Lost River, but the easiest is going behind the Degasi Habitat in the Deep Grand Reef. You'll see some green pools below you, follow that pathway until it all turns green. You'll follow this cavern till it forks, then go right. After going further down in the big cavern with the skull, fork right again and you'll see the facility. Entrance is on the Left side as you enter. Hope the video helps!