Easiest mega nest due to the lack of a Titan hole. It's a ring of Terminid dugouts surrounding a huge spire made of Terminid rock (what is this stuff made out of?). There are some high walls surrounding the portions with Elite Bug Holes, interrupting travel in the inner ring.
Visually-
Tall spire which can be spotted from a distance. High walls surrounding inner ring.
On the map-
Circular shape, spire in the center.
Hole count: 11
Elite bug holes look like the holes found in Stalker Lairs and spawn either Alpha Commanders or Bile Spewers on Bile Spewer constellation maps.
https://youtu.be/vK_gIPUXPqk?t=143
Probably the most inconsistent outpost clear because the spire is so tall it can block barrage hits depending on orientation. The portion facing the exterior of the map is the part which will be completely shielded. Eagles can bypass this restriction so long as you vary the angle of approach.
I target the more spread out cluster of holes with a walking barrage, and another portion with a 380. The walking barrage is partially interrupted by the spire destroying a few holes it might not normally, but I could have eruptored them easily even if it didn't. After running for a while on the outskirts of the base I finally find the last hole and destroy it with my eruptor.