Setting off a firecracker inside a tunnel - GIF

Setting off a firecracker inside a tunnel.

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Previously:

https://www.homemadetools.net/forum/...119#post176367
https://www.homemadetools.net/forum/...631#post166987
https://www.homemadetools.net/forum/...643#post118142
https://www.homemadetools.net/forum/...341#post135208
https://www.homemadetools.net/forum/...051#post157214

There had to be something more than a simple firecracker in there

Firecracker and a whole lot of fumes of some sort.

Brilliant. Fill the tunnel with propane and light a firecracker.

That's a good way to go to prison for a looong time..... Especially if that was a railroad track above the tunnel. After the first report, there was a small fire burning on the far end of the tunnel prior to the secondary explosion.

No surprise that one of these geniuses shot the whole thing with his camera turned the wrong way.