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Sigil Ciy of Doors (Topology of a Torus) - MATHS
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<blockquote data-quote="Shemeska" data-source="post: 4603080" data-attributes="member: 11697"><p>FWIW, attempting to tunnel down through the ring was addressed in some of the material. The rock was wierd, it was brittle and crumbly upon being removed from the surrounding matrix. And people did tunnel down into so-called UnderSigil or The Great Below with some regularity. Except just like the city streets above, things moved around and rearranged themselves with bizarre frequency, with things often being forgotten, abandoned, or lost. Who knows what all might be down there, but it's rife with all sorts of wierd stuff, wandering undead, fiends, the warring cranium rat hives known as the Two Great Minds, etc.</p><p></p><p>However while tunneling down is possible, nobody has ever managed to reach the bottom of the ring or break through to the outside of the city - something everyone expects given the enclosed shape of the city as seen from the base of the Spire in the Outlands. Perhaps it keeps going down forever? Perhaps beyond a certain point you keep dropping through portals and you simply can't burrow down any deeper?</p><p></p><p>In my campaign I had the PCs delve down into the tunnels, and eventually they came across a staircase going down. Two miles of downward spiraling stairs later they stepped through a gateway (which did not show up as an active portal) and into a huge courtyard... open to the sky... underground. Pale green sky, featureless and stretching up and out beyond the boundary of the courtyard. By any measure it was impossible, and it simply didn't fit any preconceptions about anything that anyone knew about the structure and position of Sigil. But yet, there it was.</p></blockquote><p></p>
[QUOTE="Shemeska, post: 4603080, member: 11697"] FWIW, attempting to tunnel down through the ring was addressed in some of the material. The rock was wierd, it was brittle and crumbly upon being removed from the surrounding matrix. And people did tunnel down into so-called UnderSigil or The Great Below with some regularity. Except just like the city streets above, things moved around and rearranged themselves with bizarre frequency, with things often being forgotten, abandoned, or lost. Who knows what all might be down there, but it's rife with all sorts of wierd stuff, wandering undead, fiends, the warring cranium rat hives known as the Two Great Minds, etc. However while tunneling down is possible, nobody has ever managed to reach the bottom of the ring or break through to the outside of the city - something everyone expects given the enclosed shape of the city as seen from the base of the Spire in the Outlands. Perhaps it keeps going down forever? Perhaps beyond a certain point you keep dropping through portals and you simply can't burrow down any deeper? In my campaign I had the PCs delve down into the tunnels, and eventually they came across a staircase going down. Two miles of downward spiraling stairs later they stepped through a gateway (which did not show up as an active portal) and into a huge courtyard... open to the sky... underground. Pale green sky, featureless and stretching up and out beyond the boundary of the courtyard. By any measure it was impossible, and it simply didn't fit any preconceptions about anything that anyone knew about the structure and position of Sigil. But yet, there it was. [/QUOTE]
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