I made two different assets for the Enclave map that might be of use to someone else. Both are made from stock art, one is a couple of pieces processed and assembled, the other is one photo, only I moved the bones so they would be a bridge (and in the map I used a rope brush on top to 'sew' them together)

Bone bridge/pile and Metal Bird Airship.
Click image for larger version. 

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ID:	120693Click image for larger version. 

Name:	bone-tower.png 
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ID:	120694