I saw this one on CANMORE when I was compiling my definitive list of Perthshire stones, and they had it down as a cup-marked rock with a possible stone circle:
Well there's no possible about it, this is definitely a circle! The stone at the centre measures 1.7m x 2.0m across it's top, and is between 0.7m and 0.9m high, depending which end you measure at. The upper surface is profusely decorated with many weathered cup-marks. CANMORE says at least 28, but I could only count 15 or 16 clearly.
Around this stone is a ring of 10 stones, with a circle diameter of about 18m (I was measuring with my feet, so it's not exact!). These stones appear to be equally-spaced from each other at a distance of about 4m. There are a few other stones lying about which may or may not have formed part of the circle, but it's difficult to tell exactly what's what as there are trees growing all over the place (which is what you'd expect in a forestry plantation I suppose), and the stones have a considerable amount of moss and grass on them. Nevertheless, this site is still well worth a visit, as it has a good feel to it.
Directions - Head N on the A9 from Perth, and take the Pitlochry turn-off (this is the easiest way to ensure you don't miss the smaller turn-off further up). Drive straight on through Pitlochry, past the circle at Faskally Cottages
to where the A924 becomes the B8019. Turn left at Garry Bridge (for Loch Tummmel & Kinloch Rannoch) and follow the B8019 west to Tummel Bridge. Instead of crossing the river at Tummel Bridge, stay heading W on the N bank of the Tummel, and take the next turn to your right, following the edge of the Tummel Forest. After approximately 2.0km is a track to the left which passes by the white cottage of Over Bohespic. Park down by the road here, making sure to leave enough room for people to get in and out. Walk up the forestry track past the cottage, and climb over the locked gate. Keep following the track up until it forks, and take the right hand track. About 200m along here you'll notice that the tall, thick pines of the plantation give way to smaller, thinner pines. It's just after this change that you can see the huge cup-marked stone down to your right. A path of sorts has been cleared down to it, so it's easy enough to spot. I was on my bike, so I'm not sure how long the walk would be, but I'd guess 20 mins to half an hour from Over Bohespic.