From the main parking lot, walk 5 minutes up Great Woods Road and take a left. Walk on this trail for 12-15 minutes until you come to a huge marsh/pond on your left. As soon as the small trail intersects with a wide dirt road, turn right onto that dirt road and walk uphill for 3 minutes, and then cut right into the woods.
I've tried finding these boulders twice now and have stuck out both times. Any additional directions/beta would be most appreciated. Where do you take a left at? Where are these in relation to the Stone Tower?
Head up towards the tower. Take your 1st left. Follow the path past the golf course (on left) until you come to a pond. Turn right and follow till you come to dirt road. Take right onto the road and look for small trail on right leading to Johnson Boulders. 15 to 20mins? Nice blocks:> Message old timer. Bet he has better directions. Think these took me three times to find.
A few clarifications on the directions after finding my way there:
From the parking lot, you walk up towards the stone tower until you see the "Cornel" Trail on your left (just before the main road splits) - the same first left that you would take on the way to the Queen's Row Boulders. Continue on this trail, bearing left to avoid taking the Stone Tower Trail. You will then continue on this trail for quite some time - you will pass the golf course, you will be able to see the hidden boulder on your right on the other side of a marshy area, and eventually you will find yourself at a lake (there is a little shortcut path on the right just before the lake which you can either take or not, it doesn't make any difference). Continue on the Cornel Path past the gully boulders until you reach the wide road. Walk up the hill for a few minutes looking for a small stone staircase on the right. When you see this staircase, take it and head directly into the woods. You will pass the some large boulders on the right fairly quickly - these are referred to as the entrance boulders in this section. After continuing into the woods away from the road for a short while, you will reach the first Bob Johnson Boulder. It is very tall and has some scorching/broken rock on the right side of it as you approach it from a campfire. If you continue to walk in the same direction for a few more minutes, you will shortly reach the 2nd Bob Johnson Boulder which has a stone bench in front of it. Hope this helps.