There are many headstones in the hunter's dream but didn't know much about them, until the other day when i ended up getting killed by a large villager that are dotted around the places you go, mainly between Old Yarnham and Cathedral Ward. Once i was killed, i woke up in a jail like place which was an unseen village. Monsters are quite difficult in this area but there is aome decent loot to be found. Once you find a lamp to get back to the dream you can revisit it through the headstones leading up to the house. Only found one so far but found a moon rune to give more blood echoes. I'll put a video up later. Anyone else found one?