TYPHON LOGS & DEAD DROP
Map - All Typhon Logs - Desolation's Edge
1 - The Machine
The first Typhon Log in Typhon's Cave within In The Wake of Doubt.
2 - Ship, Wrecked!
The second Log is at a nice overview place towards the hovering cube.
3 - The Naked Truth
The last one has a nice overlook on the planet at "A Testament of Longing"
Map - Dead Drop location - Desolation's Edge
Looks like Typhon had a man cave behind the waterfall.