Need Environment Log Help!

[Tennebrum]

I only have two left, and I desperately can't find them. I was wondering if anyone could tell me how to get the Log for (The Siphoned Forest), and the (Sulfur Pools).
If anyone could please tell me what to do to get the logs there I'd greatly appreciate it.
Cause idk if it's a log book i need to find, or an antenna. Anything will help.

[PurpSnurp]

they're both found with antenna's that rarely spawn on the map... i believe clovers help with spawning them but its still a damn chore. I'm still stuck on finding the sulfur pools log its literally the last thing i need for my logbook. I've heard going into multiplayer with a bunch of people who don't have the log either works quite well.