Oya, among other things, is the Yoruba Orisha who is the keeper of the gates of cemeteries, assisting those making the transition across to the Unerworld, and giving guidance on the ghost roads. Her powers over transformation and change can support us in our lives, assisting us as we move forward toward achieving that which is necessary for our betterment, but nonetheless painful, and that which is more difficult to get through. Some see Her as the Crone in the trilogy which includes Her younger sisters, Yemaya and Oshun.
I include Oya here, during Hallowstide because of Her relationship to cemeteries, the resting places of the dead, and Her abilities to hold back or call forth the Spirits of the dead. Oya is one of the Queens of the Dead. She does not live in the cemeteries, but at the gates. There is much more to Her than what I have written here, Oya is a fascinating and complex Orisha.
Blessing dark and deep!