Hi Kaz,
This is a fantastic prologue. The prologue opens vivid description. This takes all the reader's attention and focuses it completely on the chapter. They will read on. This is a wonderful opening hook. The detail puts the reader all the way into the prologue. You have set up your conflict very well for the reader. There is no dialogue but it is not needed here. The characterization is fully developed and believable. The prologue concentrates on the woman exploring the ruins, and she comes across as a real person. Great job.