Religion in Ancient Sparta

I know that most of the sources that we have talk about the Attic Hellenists, but what exactly do we know of Spartan practices/local beliefs? This question, though I am asking about sparta in perticular, applies to the other region as well.

We have succinct and brief descriptions of religious sites of many parts of the Hellenistic world from Strabo and Pausanias, often including their religious history, and there are a handful of references to important festivals of these areas.

However, the variation in local religion typically involved location-specific myths, god-forms, and daimones, along with festivals tied to local temple sites. Actual religious practice, however, did not differ much by area, worship grounded in hymns, immolations, votive offering, libations and processions characterized Greek (and to a great extent Roman) religion as a whole.

Oh boy I haven't posted in a while. So in a way it was rather subjective? This must be why the myths as well as the histories differ at times.

There's a small but useful chapter on Sparta in
A Companion to Greek Religion. 2010 (Blackwell Companions to the Ancient World)

I gave a short review of the book here
http://www.amazon.co.uk/gp/product/1444334174/sr=1-1/qid=1418407605/ref=olp_product_details?ie=UTF8&me=&qid=1418407605&sr=1-1