25 years ago we put in a three foot high retaining wall with railroad ties to hold back a slope at the side of our house, and continued the wall in a single row at the bottom of a less steep slope at the front of the house. But even creosote-soaked ties rot after decades, and we replaced the retaining wall with landscape blocks, leaving the front layer of ties. However, the blocks and ties didn’t match, yet I didn’t want the extra work of removing and disposing of the ties, so I got some matching blocks to put over the ties from a neighbor (thanks Kurt!). Ice plant had grown over many of the ties, sometimes a foot high. More work to cut it back. So I got out my shovel to cut through it, then had an inspiration...