An extension of the Transco natural gas pipeline system — cheerily called “Atlantic Sunrise” — would run 183 miles across Pennsylvania. Its path goes through lands belonging to the Adorers of the Blood of Christ, an order of Catholic nuns. The sisters are not having it.

A federal agency granted permission for Williams Partners, the company behind the pipeline, to use eminent domain to seize and build on private lands, but it has not yet gone into effect.

That left the nuns, assisted by the grassroots group Lancaster Against Pipelines, free to raise their open-air chapel with the intent to stall construction. They held a dedication ceremony on Sunday for the makeshift chapel, which sits right…