61047
It is a relict scarp and ancient persistent topographical feature formed from an ancient early Pleistocene shorelines of ~ 1.8 million to 10,000 years BP during interglacial periods .
 Pleistocene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Pleistocene