Estruturas urbanas maciças que 'rastejaram' sobre as planícies devido a serem desconstruídas / construídas em uma direção

Eu acho que isso poderia ser 'Peregrinação' de Drew Mendelson. (1981)

Extrair de "Postar lista de livros apocalípticos": -

As far as anyone knew, all mankind live in The City. The City, a self-enclosed towering single building, had always moved generation by generation across the vast empty landscape.

Brann Adelbran met destiny when his family sector found itself at Tailend. Already the Structors were planning to dismantle his ancestral apartment high on an upper floor of that colossal metropolis.

Brann would have to make the pilgrimage to Frontend to re-establish his family there for the generations to come.

But when tradition was suddenly shattered, Brann was forced to flee, not on the established routes and hallways, but down the forbidden shafts into the lost chambers, corridors, and basements which even legend had forgotten.

His pilgrimage became an odyssey of terrors, mysteries, and scientific marvels.

Mundo Invertido por Christopher Priest? Anteriormente identificado como a resposta a esta questão , que surgiu na minha pesquisa no Google (depois de alguns falsos positivos) por novel moving cities deconstructed at the back built from the front .

In the novel, an entire city and its residents travel slowly across an alien planet on railway tracks. The city's engineers must work to lay fresh track for the city, and pick up the old track as it moves. Many people are unaware that the city is even moving. A crisis ensues as its population decreases, the people grow unruly, and an obstacle looms ahead.

Vejo por que você achou isso difícil de identificar - quase todos os resultados de pesquisas relacionadas ao Google (e a primeira coisa que me veio à mente quando vi o título da pergunta) foram sobre os excelentes Mortal Engines de Philip Reeve. série, que também diz respeito a cidades em movimento.