Mind you: this is a second-hand product! It is in excellent condition though.

On Hallowed Ground is an accessory book for the Advanced Dungeons & Dragons fantasy role-playing game, for the Planescape campaign setting.

This 196 page book contains information about the planar domains of deities from 20 separate pantheons. New ideas and rules for priest characters on the planes are included, as well as tips on creating, visiting and surviving divine realms, comprehensive appendices listing gods by pantheon and portfolio, and planar maps.