The River, Lethe
Asphodel's River
The River, Lethe, Is the giant web-like lava river spanning Asphodel. It is the river that the Boatman, Phlegethos, Mainly traverses. There isn't too much to say about this one, Unlike Styx, It doesn't have too much going for it in terms of being unique.
Lethe is the river which the Bone Hydra happens to use for travel as well, And while it's a little rarer to see it doing so, It can happen. The heat around the area becomes much worse when near Lethe, Often to the point of being nigh-unbearable. The river is known for being extremely deadly, Usually being able to melt a man in under three seconds.
Coloration is what you would expect from lava, Mostly orange with the red bits signaling deeper areas.
Type
Lava river
Location under