Hey that pic on your website of seneca creek...the waterfall...Where exactly is that located?
And the waterfall on canyon rim trail...is that the one out next to the olson fire tower? I think its called falls of big run?
Falls of Seneca Creek are at the end of Seneca Creek Trail, past the junction w/ Huckleberry Trail, and at the junction w/ Horton Trail. The trailhead is on the way up Spruce Mountain, the long gravel side from Job and Whitmer, not the Seneca Rocks side. Its a pretty easy 5 mile hike along Seneca Creek to the falls. If you go out there, dont backtrack back out, try to make a loop w/ the other trails, using High Meadows Trail as a connector to the upper circuit of Lumberjack or Huckleberry trails.
Falls of Big Run are out Canyon Rim trail, but theyre definitely not "next to Olson Fire Tower." Its a little more than 3 miles out the trail if you start at the fire tower. Its an easy hike out to the falls from the tower, mostly a slight downhill grade when traveling in this direction. The trek back is slightly more difficult. If you had a high clearance vehicle you can actually drive right out to the falls using the FR that turns off to the left from the road out to the tower, but I prefer to hike the Canyon Rim because its such a great trail. Ive hiked that one once a year for the past few years, never gets old. Still trying to recreate a shot I got years ago with better light, so far to no avail. http://guyforget.week4paug.net/travel/mon/canyonrim/DSC00674.JPG.html
If you plan on hiking extensively in the Mon, Id definitely recommend buying the Mon. Forest Hiking Guide from the Highlands Conservancy if you dont have one already. Not only is the donation greatly appreciated and put towards a good cause, but its also the single best source for guide info on the MNF. http://wvhighlands.org/store/pages/mnf8_hg.html