alstras

Could you clarify what you mean by "alstras"? It is not a widely recognized term in major reference sources, so its meaning can vary by context. Do you intend:

- a geographical location or place name,

- a surname or family name,

- a fictional term (mineral, plant, entity) in a work of fiction or game,

- or something else entirely?

If you prefer, I can draft a neutral, concise disambiguation-style stub that outlines plausible senses and avoids making unsupported claims, and then expand into a full wiki-style article once you specify the intended meaning.