I nearly scrolled right past this mind-boggling MOC by davekuhh. It's not that I have anything against construction equipment or Catepillar, there's just so many of them. But then I noticed an unusual amount of detail, and I was curious what the "sand" was that it was moving. Turns out this thing is absolutely colossal, and that "sand" is a mix of 1x1 and 2x2 tiles! You'll have to click through to truly appreciate this beast, it's over three feet long and really needs to be seen at high resolution.