The paper presents a stone vault built in Jericho, with an innovative construction principle allowing for unforeseen forms for such structures. The architectural innovation stems from structural morphology and stereotomy. The vault is made out of 300 mutually supported stone ashlars. It covers a surface of 60m2 and spans 7m with a constant thickness of 12cm. The geometry follows the shape of a gyroid surface on which Chebyshev nets set the pattern of the interlocking stones. The formwork has been designed following the structure’s shape and ashlars’ positioning information as automatically generated files for production. The implemented formwork is a combination of advanced fabrication and local craftsmanship. The workflow includes an interface routine between the geometric and structural definitions. A nonlinear structural model has been developed defining ashlars as linear elastic solids following Mohr-Coulomb criteria.