We get crushed lava rock, not the fresh hot kind. There is a quarry on the island. Comes in all sizes. I use 3/4 inch but you can get all sizes up to 2 man rocks for rock walls. As the island was made of lava flows we all live on it. Where we live the last lava flow as many hundreds of years ago so we have 6 ft of soil and cannot find a rock. A mile from here homes are built on more recent flows and they have no soil. They have to get huge rock crushing bulldozers in to level their lots before building a house and then haul in top soil and mulch to start a garden. When putting up fencing I can pound a metal fence post in in 10 seconds. Those poor folks on rock need a jack hammer to make a post hole. There, now you have something to bring up at your next cocktail party.
