She'd explored it briefly a few days ago. Had a proper look, with light and everything. The place was crammed full of carvings and runes and symbols and the place vibrated with magical energy all of its own. It was slightly stupefying. Enola had explained that the house was placed on the convergence of several ley lines, and was set out in a precise, deliberate way to harness them and create a powerful vortex of wild magical energy, one that Harry, somehow, had learned to tap into and channel.