| /turf/open/misc/asteroid | Asteroid |
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| /turf/open/misc/asteroid/basalt/lava_land_surface | Surface. The surface is warm, but survivable without a suit. Internals are required. The floors break to chasms, which drop you into the underground. |
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| /turf/open/misc/asteroid/basalt/lava_land_surface/no_ruins | Used for the lavaland icemoon ruin. |
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| /turf/closed/mineral/volcanic/lava_land_surface/do_not_chasm | A turf that can't we can't build openspace chasms on or spawn ruins in. |
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| /turf/open/misc/asteroid/snow/icemoon/do_not_chasm | Exact subtype as parent, just used in ruins to prevent other ruins/chasms from spawning on top of it. |
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