I did, myself, once create a small ridge. It was unintentional as I was trying to lower the ground around my lime pit and it is very much undesirable to me. I posted on this forum at that time and iirc it was not a surprise that it happened, though I'm not sure you can willfully recreate it.
I'll look for my earlier post and edit here if I find it.
Edit: From about 5.5 years ago, but it looks like my screenshot to the "game.salemthegame.com" domain got lost. I'd happily edit if the domain moved, but I'm not sure I can recover it as I'm sure the computer responsible for it was decommissioned long ago.
viewtopic.php?f=3&t=8894&p=182812#p182812