The cutoff for the Mason Lake trail is clearly signed with a big wooden post, although it looks like it could fall over with a slight push.
The ""trail"" quickly turns up and gets rough, always following along Mason Creek. It goes over roots and rocks, through mud, along narrow little muddy paths cut in hillsides, and under numerous giant trees which look like they have been covering the trail for years.
Arriving at the Boulder Field, I saw some flag tape around a tree just to the left, and it led across the creek (over giant boulders, you could barely see it) to a trail through some trees along the left side of the creek and boulder field.
Eventually (with a lot of effort), the trail works its way back near the top of the boulder field (wood post FS sign), and along a further steep trail.
Nearing the lake at a level area in the forest, the day's first snow covers most of the trail. The lake is about 75% covered with snow, but its a very thin layer and it looks like it could be melted out in a week.
I headed up towards the ridge for Mt. Defiance, but I had already lost a lot of time route- finding and wasn't in the mood for any more! The trail is amost all snow covered from this point (although the mountain slopes are probably well cleared), and no one else appears to have made it even to the lake today, so I had no footprints to follow, and called it a day. R/T 5 miles.
An excellent challenging trail, not for families, but plently of solitude (the masses were all going to Bandera, it seems)... Why are trail park passes required for a trail that hasn't seem maintenance in over a decade'!! Just say no (passes) to the USFS!!!