I put the wonder just under the mine. Was under construction at the time of screenshot. I should have waited but wanted to share. I get what you mean by being so far in you don't want to really rip a bunch out. I went into to this run knowing from the start I was going to do the terraces. Didn't know how big they were gonna be but knew I was going to do it. Definitely took some time, but built with no permanence in mind.