They run through boxes dug into the ground and that’s where a connection is made using electrical arcs to weld the two ends of glass together and keep them housed. Then the business end tends to go to a telecom building either directly if it’s a small town or through their current system the copper was on.
It’s been a few years I’m a little sketchy on the details obviously lol but thought I might as well jump in the discussion.
They’re used to be; now it’s just puns and jokes for the most part. I loved that about reddit and I hope Lemmy thrives in this way too