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History The DIR approach ( and name ) evolved out of the Woodville Karst Plain Project ( WKPP ) in the mid-1990s , where the objective was conducting dives in a very high risk environment : Not only cave diving , but also deep , long duration and exploration of previously unknown parts of a very large cave system .
 Woodville Karst Plain Project
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Woodville Karst Plain Project