1. 
   potholer
   [n] - a person who explores caves
   Found op http://www.webdictionary.co.uk/definition.php?query=potholer
   
   
2. 
   potholer
   spelunker noun a person who explores caves
   Found op http://wordnetweb.princeton.edu/perl/webwn?s=potholer
   
   
3. 
   potholer
   1) A person who explores caves 2) Adventurer 3) Explorer 4) Spelaeologist 5) Speleologist 6) Spelunker
   Found op http://www.mijnwoordenboek.nl/EN/crossword-dictionary/potholer/1
   
   

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