This area is completely unheard of! Mainly due to the fact it is hidden in central IL. With that said this is a decent bouldering area if you're bored of climbing indoors and looking to climb noting over a v3.
You have to park across from Lehigh Park in a parking lot.
Cross the road and continue towards the outdoor band stand. Go past the band stand towards the back left corner of the park.There you should stumble upon a trail. Follow that trail until it starts to go downhill.
Take the second trail on your left (this is a downhill mtb course so watch out!), it should take a sharp left and then open up into a a clearer area. Continue along the downhill course and look to your left.
To your left you should see nice cliffs and 4-7ft tall boulders. Look all around we are finding new boulders every time we go out there.