75875
The exact filming location , sometimes referred to among historians as the " Rocky Hill , " remained elusive for almost 60 years , until the site was discovered on an expedition by filming location researchers in early 2015 .
 Rocky Hill
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Rocky Hill