Remarks Diameter of 3.2 km is also mentioned.
It is suggested that iridium anomalies found in Jeptha Knob are extraterestrial in origin. Also there is structural evidences.
It is a known fact that almost all so called cryptoexplosion structures are later identified as impact structures. Jeptha Knob has be suggested to be a cryptoexplosion structures. However, no true cryptoexplosion structures is known.