without more context i can only assume this is talking about some form of opening / cavern made with brick sand, in which an oven / kiln used to stand. The correct nouns (opening/cavern and oven/kiln) will depend on the context of the passage - if it is a domestic scene or industrial...

стояла agrees with печь, and so it unlikely that печь here is being used as a verb without a subject, and from research brick sand is often used in the construction of wood-fired oven openings/enclosures (see below)

hope this helps!