The answer to this question is trying to find a cryptozoology, which, though considered pseudoscientific department, but has millions of supporters worldwide.
The ancients had knowledge that surpass ours? If so, where? By extraterrestrial beings? Or humanity gained this knowledge in antiquity natural evolution? But this means that humanity has lost part of its history?
Typical reptilians are described as 180-240 centimeters tall, two-legged creatures that have scaly, green skin, emit an unpleasant odor, they have large eyes, usually yellow or golden
Alaska is situated on the Ring of Fire, a huge area in the basin of the Pacific Ocean where earthquakes and volcanic eruptions frequently occur.