Jaka
No sightings of spiders/snakes or other nasties, but take precautions against leeches. And almost no people anywhere (I only encountered two locals near the summit). By the way, don’t believe the maps, as the steep part is much slower than advertised because it involves a fair bit of climbing. Although if you are on a foggy day with no views and you don’t need the ‘challenge’ part of the experience, I think that turning back after the fifth shelter is a pretty reasonable course of action.
Took me about four hours up and down, I think, but I am a generally fast hiker.
Overall a pretty cool jungle hike!