Claybourne is a radio drama set in a remote, rural community in North New Zealand. It is FULL of atmosphere and mysterious matters. Its website says: "Claybourne was a sci-fi / supernatural thriller / soap opera radio drama, recorded and broadcast nationwide in New Zealand in the late 1990s. This is the podcast revival of Claybourne - and quite possibly the first podcast drama serial."
There are 96 six minute episdoes, of which more than 50 are already online. Production values are excellent, it's rather spellbinding, and the NZ and Maori accents are not too hard to understand. You can read text about the drama's setting here, but I suggest you listen to the first two episodes first. The website has a separate page for each episode, with a link (near the upper right) to the next episode. (Go to the archives to hear them all in order.)