I know that it is called different things, but essentially its the after life or waiting place for the next life. I am a very new and solitary practitioner of wicca, The last thing i want is to start a argument but I will write what I found from the books I read.
The summerlands are supposedly a place of eternal summer where we rest from our past lives and review it with the god and goddess until we reach perfection and ascend to the higher realm of being.
If I can ask of it i would hope other viewers of this thread will post their views or information on the subject. Thank you in advance.
~Blessed be, Ole