Where is the Hill Cumorah?

In the past, the LDS Church has strongly taught that the Hill Cumorah in the Book of Mormon is the same
hill found in New York State. Today, very little (or nothing at all) is taught of the location due to the fact 
archaeological evidence is lacking.

1] April 1928 General Conference Report (online, mirror).
2] Doctrines of Salvation, volume 3, chapter 12. PDF file with scanned images (12 MB in size).