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Message: <blockquote data-quote="Dannyalcatraz" data-source="post: 2798464" data-attributes="member: 19675">Such towers are also a part of the Great Wall of China and related defensive structures.And analogous systems developed all over the world.  Native American smoke signals were quite effective, as were the "talking drums' of African and South American jungle/forest dwellers...and had the additional benefit of not requiring line of sight.By the words in the rest of your post, you left one out: insulators.  Be they rubber or glass or whatever, you need them.Rubber is a plant byproduct, until you get petrochemically created artificial rubbers.  Glass can be natural (Obsidian is a natural glass) but a more reliable source and purer glass is probably needed for insulating a telegraph system- thus you'll need a glassblowing industry.  Remember that manmade glasses were a loooooong time in developing.Just had a couple of new thoughts on this:1)  The viability of a telegraph in a fantasy world depends on which race you're designating as the inventors of the telegraph.  Orcs & Humans- new, short lived races- are less likely.  Elves and Dwarves- long lived races with extremely long histories & connections to magic and technology (respectively)- much more likely2)  The actual physical construction of a telegraph system may vary depending on the race doing the construction.  Take Dwarves, for example.  They might have an entirely subterranean telegraph, constructed by injecting molten copper into known, mined-out fissures.3)  Other materials may get used.  Water, especially salt water, is also conductive, and water-filled glass lined tubes could be used in place of wire.  Delicate?  Yes.  But those glass tubes could also be protected by nesting them in metal, stone or concrete.Concrete?  Yes- Concrete was used in the construction of the Roman Aqueducts, so I see no reason it can't show up in a fantasy game.</blockquote>

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