I found this while randomly looking around. I had never seen two spines facing each other.
The corresponding julia sets are very good looking and ... might be called a seahorse valley in 3D!
Coords = (-0.571310;-0.00491;0.67878)
Mandelbulb3Dv18{
g.....S....O/...S....2....EcZFOXA4aszQK0A8vcsKyDRzeGGo0GWzvXZUMxwl/RzSK0A8vcsKyD
................................a7q63LvXt.2........A./..................y.2...wD
...Uz6....k4..../M.0/......D5...L0....E3.....k0UakgOBPmD/..........m/dkpXm1....U
z.....kD12../..........wz.................................U0.....y1...sD...../..
.z1...sDyNVSbr7Azvn7HTPmgNJ7z0kAnDyIVkkjR18MyNNPXwXZavGLhf5myKCgT4PlQTlDzXQdCy9Y
Kw9KPNzDC//2zO1l9Z3KR6mDU.....oc/.............sD.6....sD..G.....................
.............oAnAt1...sD....zw1.........................................R....k1.
.....Ksulz1.......kz.wzzz1.U..6.P....U5...EB....m....c3...UB....6/...I1.....SF52
...U.eijHyD.Lsnz.QVDz1....6.pc..zXCc..kvrEtMc7xD6ocyFE0ujz1..........2.28.kFrA0.
.Ub96aAIVz9.1se7Umvxz0........../EU0.wzzz1...........s/...................E.2c..
zzzz.............0...................2./8.kzzzD............8....................
/EU0.wzzz1...................................UhiS0.xfDfveeGnpw/.ojygbHJJMffb.Ezu
nuh7hVhiS0.xfDfvlA5quu7.ojygi1bTMffb.EzunuClyVhiS0.xfDfvMw5quu7.ojyginqTMffb.Ezu
nuCkzVhiS0.xfDfv..EsUa3feeWCNqGQIJ36wk8EwyLsUa3f................................
E.U..2..F2E..........6....EGiFLNbJaQU.pPrJaQ.........................c..........
...................6./........zj................................................
................................................................................
........................}
{Titel: dual spine~}
Mandelbulb3Dv18{
g.....S....O/...S....2....Enxn4M2.Yjzagt.jjXG/7EaC/seXCvcz91P7JLRNllzq9pkaKjwCuD
................................ZRad/WQWt.2........A./..................y.2...wD
...Uz6....U6..../M.0/.....Eg9...T1....E3.....ElpLLMhGPmD/..........m/dkpXm1....U
z.....kD12../2kHywXy0oAszisEkcqSXstjkD12qaGXYz1...........U0.....y1...sD...../..
.z1...sDu6imiLMcsvXn0aRzexXzyYVLLSzn9NmjNEmWJb5LawHf9n8ytxizyiZ3bjuwoBjDhbvPRRrz
uvf2e4T5BlW7zG6i0PGWb1kjU.....YU0.............sD.6....sD..G.....................
.............oAnAt1...sD....zw1.........................................R....k1.
.....Ksulz1.......kz.wzzz1.U..6.P....U5...EB....m....c3...UB....6/...I1.....SF52
...U.eijHyD.Lsnz.QVDz1....6.pc..zXCc..kvrEtMc7xD6ocyFE0ujz1..........2.28.kFrA0.
.Ub96aAIVz9.1se7Umvxz0........../EU0.wzzz1...........s/...................E.2c..
zzzz.............0...................2./8.kzzzD............8....................
/EU0.wzzz1...................................UhiS0.xfDfveeGnpw/.ojygbHJJMffb.Ezu
nuh7hVhiS0.xfDfvlA5quu7.ojygi1bTMffb.EzunuClyVhiS0.xfDfvMw5quu7.ojyginqTMffb.Ezu
nuCkzVhiS0.xfDfv..EsUa3feeWCNqGQIJ36wk8EwyLsUa3f................................
E.U..2..F2E..........6....EGiFLNbJaQU.pPrJaQ.........................c..........
...................6./........zj................................................
................................................................................
........................}
{Titel: dual spine-julia-red drake}