A subspace tunnel is a wormhole-like opening through space-time. Although both are topologically similar tubes of genus one and allow passage through distant parts of a universe or between different universes, the difference is where and how they exist. As opposed to the curvature associated with a wormhole, a subspace tunnel phenomenon exists solely in subspace and is powered by dark energy drawn from normal space-time. However, dark energy produces hyperphasic radiation within the tunnel, which can cause immediate disintegration of organic matter unless a properly harmonized multiphasic frequency is channeled into energy shields.