This is an excellent and fascinating topic, but it requires a careful, multi-layered review. A request for a review of "Hubo gigantes en la tierra" (the Spanish title for Zecharia Sitchin's There Were Giants Upon the Earth) in PDF format touches on archaeology, linguistics, mythology, pseudoarchaeology, and the unique legacy of Sitchin himself.

Héroes de renombre: Basándose en el pasaje bíblico del Génesis que menciona que "había gigantes en la tierra", el autor identifica a estos seres con los semidioses de la mitología sumeria y babilónica, como el rey Gilgamesh o el héroe del diluvio Utnapishtim (Noé).

Sitchin argues that the "gods" of Sumer and Babylon were actually visitors from a distant planet called

Sitchin's work has been met with both praise and criticism. Some researchers have challenged his interpretations of ancient texts, arguing that they are flawed or based on incomplete information. Others have questioned the validity of his sources or the lack of empirical evidence supporting his claims.