99 percent invisible has a good article and map, I remember spotting one of these hiking as a kid and my dad explaining what they were. https://99percentinvisi

99 percent invisible has a good article and map, I remember spotting one of these hiking as a kid and my dad explaining what they were. https://99percentinvisible.org/article/vintage-skynet-atts-abandoned-long-lines-microwave-tower-network/ https://99percentinvisible.org/article/vintage-skynet-atts-a...