Hey Shroom. The S. Fork Hoh trail is one of my favorites, and I do it a couple times a year normally. I've never heard it called the trail that time forgot, but it's fitting so maybe it's referred to as that in a book somewhere. It's a prime example of a coastal rainforest, and there's towering trees along the length of the trail once you pass the park boundary at 0.4 miles in. The trail is easy goin all the way to the end, and very few people go further than that. If the weather is nice and it doesn't rain, the river is fairly easy to cross beyond the trail's end. I've been about 7 miles beyond it. If you want to venture beyond trail's end, I always take my amphibious shoes and hike up the river, crossing as necessary. It seems easier to do this than to venture through the woods... It gets hard climbing over downed trees that have 4+ foot diameters when you're packing a heavy load. Past the trail's end, it's easy going up the river for about 3.5-4 miles, at which point the river takes a bend to the south. At the bend is a pretty nasty box canyon, and you have to find the elk trails in the woods to get around it. But it's a beautiful place. I've been there probably 7-8 times and only seen people past the end of the trail on one occasion, and they said they were headed to the Valhallas.. If you want any more info, let me know. Here's a pic I took of the box canyon about 8 miles in.