This is a great place to stay for a night or two, has great views of the lava flows, and is a good place to stay and take in the local area! The park gets passed over because most people who come thru this town stay in Ruidoso. The lava flows are interesting, you can see the test site for the first atomic bomb(through a telescope), and the local town is worth visiting.
Diamond M Ranch is a family run campground that is equally close to the cities of Kenai as well as Soldotna. Friendliness as well as comradarie are this campgrounds main assets. They offer organized summer activities such as campfire socials, hiking excursions, and clam digging trips, as well as a fish cleaning station and freezer space for fish that you catch. They also have a community satellite dish for dishnetwork subscribers, and I understand they are working on direct tv as well. One plus is they will allow a person to wash their cars as well as rv as long as you conserve water, this is huge plus when traveling! The owners are currently working on the property, and it does not have the polish some campgrounds have, but if you are looking for an affordable place, especially on longer term stays, with a friendly atmosphere, then this park is worth looking into.