Yes.
It was evidently a problem area going way back as VMZ rehabilitated much of this part of Rampgill using concrete to beef up the 19thC dry-stone arching. Many areas of stone packwall were also mortared.
Just before this junction, the level is 4ft wide and arched in concrete. Where the junction starts to widen, a mortared stone arch just one leaf (about 12") thick was inserted under the existing dry stone arch which was presumably starting to fail.
This was probably fine and dandy at the time, but after 75 years, the weight of stope fill above (possibly exacerbated by water percolation and ground settling) has caused both arches to fail. What remains is only still there because it is wedged (hanging death), with possibly a small amount of natural calcite cementation assisting.
Remediation plans are afoot!
Mark