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0008883Dwarf FortressGeologypublic2015-03-29 13:442015-03-30 16:54
normalminorhave not tried
MacOS X10.9.5
0008883: Unknown Material Substance at top of adamantine vein
An unknown material is at the top of my adamantine vein, it also appears to be changing the BG color of "empty space" tiles around it.

They are not constructed walls like in bug 0007937 rather "naturally formed" rough hewn unknown material walls
Open the attached save, it should be zoomed in where the material is, if not go down to the lower Z levels and look for the adamantine vein that goes beyond the magma sea (it breaks into the cave)
DFFD Bugged Save: http://dffd.bay12games.com/file.php?id=10715 [^]
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related to 0007856acknowledged lethosor Ruin intersects with spire and causes underwold invasion on reclaim 
Issue History
2015-03-29 13:44TerffNew Issue
2015-03-29 16:15DetrosNote Added: 0032453
2015-03-30 15:26TerffNote Added: 0032478
2015-03-30 16:54lethosorRelationship addedrelated to 0007856

2015-03-29 16:15   
Was this fort/world generated also in 0.40.24? Are you using any mods, graphical sets or have you done any changes to raw game files?
2015-03-30 15:26   
It was in fact made in an older version, I guess that is probably the case.