Love to see the caves that are playing with elevation. thats definitely the way I would go!

So for the pneumatic sand transport, what I think you want is a high volume ventilation fan, like the ones used for confined space access. You also want to reduce the diameter of the pipe before the tee, then enlarge it again after. It creates a venturi, where the air speed increases and the pressure decreases. It'll suck the air (and sand) into the pipe.

I'm really enjoying your sand tunneling videos, but I feel obliged to say something. As someone who has done my own tunneling through soft sandstone, I IMPLORE you to reinforce you walls and ceilings. Also, please, please, PLEASE keep a VERY close eye on ANY HINT of the ingress of water/excessive moisture. Especially so when associated with a ceiling. I dug a 15-20 foot deep, multi-level tunnel in a sandstone bank in my mid- to late-teens, & found that even the most solid-seeming walls and ceilings can collapse unexpectedly, and especially so after periods of heavy rain or strong humidity. I abandoned the tunnel after a relatively small, but COMPLETELY unexpected, deeply surprising partial collapse of part of a wall and ceiling. It happened in a particularly strong, hard-packed region. The partial collapse, which followed a period of steady rain for a few days and high humidity, happened in an area that had seemed SO solid, and unlikely that I immediately abandoned any further excavation until I could extend my wall and ceiling supports. The collapse CRUSHED 2x4 and 6x4 columns and rafter-supported plywood ceilings, and completely blocked the tunnel. To this day, my shovels, sleds, pick-axes, sledge hammers, snow-sleds (used for sand removal), wheel-barrow, and reciprocating saw/blades are entombed in those tunnels, and I would be too scared to even attempt a retrieval, even if I knew for sure the section of tunnel they were stored in (which had the only arch-suppieted section of ceiling) hadn't been buried in the collapse. Anyway, just please, PLEASE be careful. I would suggest that you consider getting an opinion from a civil-engineer, or someone with equivalent training/education. It would suck for such an awesome project to end in tragedy.

You don't need to beef up those shelves, you just need some drinkers!

I'm pretty sure youtube sent me to saveitforparts as a suggestion for more satcom vids, but instead I'm binging on all the digging. 🤣

Your best bet might be making an Archimedes screw with a fairly loose fitting auger. You can get fairly cheap 4" augers that could be connected end to end inside of a PVC pipe and then ran by a torquey electric motor (or better yet steam engine) via a gear/chain drive. The nice thing about Archimedes screws is they work even without having a precision fit. You could connect more or less sections of PVC and auger together so it's modular or at least a permanent installation in the haul tunnel. Obviously this would involve some expense but it would be a lot more automated and less back work.

I love the sandland video's! Great job :)

I just stumbled across this channel, watched the FTA TV video, the lil mini tank stair climber, but then I saw this and instantly subbed. This is some intense work holy crap. Plus it's absolutely gorgeous inside I can't wait to see some permanent lighting in that bar and such.

The bar is really coming together! Love these sand land videos.

And you are going to survive the apocalypse no joke haha

Stopped in the other day and had a beer, love the space and looking forward to coming back!

You need a grain auger ✌️

cool video as always

Love the sand land videos

"dumpster booze" lol, haven't heard of that one before.

For moving the sand; I was thinking of a flexible shaft with a continuous inclined plane around it. Run inside a pipe of a similar ID as the screws OD, it would work like a grain conveyor or similar. The disadvantage I think would be the need for a 2-10hp electric motor which would weigh a great deal, or a gear reduction; to deal with large amounts, or large distances.

A man, a sandstone cave. In summer, when it's 40 degrees Celsius outside, it's pleasantly cool inside the sandstone cave.

Haha good intro 😂

Frikkkin Awesome like always

I’d love to go see sandland in a couple years Western Wisconsin, right? I’m not too far from there for a comfortable drive

do you think you could make the walls extremely smooth if you tried, or would it always be rough due to larger chunks breaking off?

awesome! that's a cool bar area and the tunnels look good. I wonder how much pressure those rock walls can hold.

damn cool

I wonder how sensitive you could get an array of diy seismometer. Heh heh. Probably just some beams flexing with the thaw though.

I like the cave videos, but I do get a little nervous that I would get lost. All kidding aside I would be scared shit-less to go in there. I'm to scared to even say LOL. 73 Leo

Do you think you could do like a comparison video on the temperature in the winter time end in the summertime in the caves

u know u sound like uxwbill lol. thats a complement

My money is on that tree.

You broke your mirror? Seven years bad luck there a mutton chops.

convier belt

lol you sure waste a lot of time trying to save a little bit of work.