  We investigate a new type of Schwarzschild wormhole, which relies on a
3-dimensional spacetime defect with degenerate metrics. This particular
wormhole is a solution of the vacuum Einstein equations. We also study the
generalized Schwarzschild-type defect wormhole and discuss the Null Energy
Condition. In particular, we investigate the geodesics and geodesic congruences
of the generalized Schwarzschild-type defect wormhole. Additionally, we explore
the optical appearance of these wormholes, shedding light on their observable
features.
