新人求助帖！关于名词修饰语的对象问题！

ygbabe

og20诊断练习92题的错误选项：the erie canal was seldom more than 40 feet wide or 12 feet deep , and it ran 363 miles across the rugged wilderness of new york , which connected the hudson river to the great lakes.答案中说which 有指代问题，在选项中refer to new york 实际上应该是指wilderness 才对，但我的疑问是，wilderness of new york 中 of new york 是modifier 且后面的which..也是modifier ， 难道说介词短语中的n 也会被后面的modifier 修饰嘛 求大神解答呀