Steinull

I’m ready to write a concise, neutral wiki-style article, but I need a bit more context. Could you specify what Steinull refers to? Is it a geographic location, a surname, a term from a particular language or culture, a product, or something else? If you have a region, language, or source in mind, please share it. If you’re open to it, I can also draft a generic stub that treats Steinull as a proper noun and note that specifics depend on context.