Before revision: A pinnacle, tower, spire, needle or natural tower ''' (, Felsturm or Felszinne '' ) in geology is an individual column of rock, isolated from other rocks or groups of rocks, in the shape of a vertical shaft or spire.
After revision: A pinnacle, tower, spire, needle or natural tower (, Felsturm or Felszinne ) in geology is an individual column of rock, isolated from other rocks or groups of rocks, in the shape of a vertical shaft or spire.