IPA: /ˈpɒθəʊlə/
KK: /ˈpɑːθoʊlər/
A person who explores natural holes or caves in the ground, often for adventure or recreation.
The potholer discovered a hidden cave during his expedition.
Potholer → The word originates from 'pothole' (from Middle English *pothole*, meaning a hole in the ground) and '-er' (meaning a person who). A potholer is a person who explores or investigates potholes, particularly in the context of caving or spelunking.
Think of someone who explores 'holes' ('pothole') in the ground — that's what a potholer does.