The quote emphasizes the size and significance of a flat-top mountain, comparing it to a carrier but noting that it is twice as large. This description suggests that the mountain is not only a geographical feature but also a monumental presence in the landscape, evoking a sense of awe and curiosity.

In the context of Gertrude Chandler Warner's "Mountain Top Mystery," this comparison might symbolize the challenges the characters face as they explore the mysteries surrounding the mountain. The imagery underlines themes of adventure and discovery, inviting readers to engage with the mystery while contemplating the grandeur of nature.