potholing

n.

探勘地上坑洞（运动）；挖洞；挖坑；

1. Cave exploration, or potholing, as it has come to be known, is a relatively new sport.
   洞穴勘察－或者洞穴勘探(人们已经熟悉了这个词语)－是一项较新的运动。

Potholing.
Potholing: Skin and Stone
The Golden Age of Potholing in Yorkshire
SOFT EXCAVATION POTHOLING METHOD AND APPARATUS
Karabiner for climbing and potholing
Potholing of the hydrophobic heme oxygenase-1 western region for the search of potent and selective imidazole-based inhibitors.
Lymphocytes and lymphocyte subpopulations responses to potholing performed in an alpine subterranean environment
Shape and distribution analysis of Merensky Reef potholing, Northam Platinum Mine, western Bushveld Complex: implications for pothol...
Symposium Abstract: Gauging the risk: The 'Fatal Accident Rate' and 'Non-Fatal Accident Rate' for caving and potholing compared with...
Urban Spelunking: Spelunking? It's What We Would Call Caving or Potholing. and Urban Spelunking Is What It Sounds Like: Exploring Ci...