I want to put in a sidewalk from my front steps to the driveway using reclaimed pavers. Originally I was just going to place the pavers in the ground after digging out only a couple of inches of dirt. But my ground is still settling and the mole activity doesn't help. I've had landscaping rocks disappear into the ground over time. If I were to do it right, I guess I would have to dig out the area more than a foot deep and then back-fill with some gravel, sand or rock. Lot of fill. I considered pouring a 4" thick concrete base on which to set the pavers. The concrete is free or only cost me a case of beer since it is excess material sent back to the plant for disposal. I'm not talking a lot, maybe half a yard. I would also dig out and pour a couple of 2' deep piers to keep the slab from settling also. I could use some of that masonry landscape caulking or a similar product to ad hear the pavers to the concrete. Or better still would be to set the bricks in a bed of mortar mix. With either method, I'm afraid in the winter I would have freezing and thawing in between the bricks causing them to crack. I don't think I would have this problem if I used a porous base (rock, etc). Any thoughts, options, or comments would be appreciated. Thanks