How deep did they get? Hope she kept an eye on it, unsupported holes quickly get dangerous, people underestimate how much weight is in the soil if the sides give out and just how dangerous that amount of weight moving can be.
replyIt was more sprawling than deep. It was a series of trenches connecting "rooms". I know they also had "water features" at some points, but the water would soak into the ground pretty quickly then be a mess for a few days, so they didn't do that.
replyNo collapses happened and everyone is still alive. :-)
Happy that all's well that ends well, but for any parents considering this, trench collapses have killed hundreds of workers in just the past decade. Anything deeper than a couple feet might be a hazard that needs to be mitigated.
replyAlso depends on the local geology and how tenacious the kids are. I couldn't dig to dangerous depths as a kid even if I wanted to because the soil got way too rocky to dig through before 3 feet down.
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