Harden reports a general consensus that the expedition reached at least as far as Senegal. Some agree he could have reached Gambia. However, Harden mentions disagreement as to the farthest limit of Hanno's explorations: Sierra Leone, Cameroon, or Gabon. He notes the description of Mount Cameroon, a volcano, more closely matches Hanno's description than Guinea's Mount Kakulima. Warmington prefers Mount Kakulima, considering Mount Cameroon too distant.