Left in charge of 2 of my grand-daughters an adventure was called for!  A few kilometres from home is an old watercourse built by a farmer about 1880, which, due to earthquakes, no longer functions. About 100 metres long , it cuts through a limestone hill and egresses above the Tukituki River. It's known locally as the Lindsay Tunnel. In the tunnel, with a torch, you can see pre-historic molluscs in the limestone and sometimes other marine animals.

Michael, you got me with the very first picture. I admit I am claustrophobic (among other things) and the thought of climbing into the entrance of that cave I find petrifying.

Here in New Zealand we have many limestone caves that go for kilometres into the very bowels of the earth, in this instance I use the word 'bowels' very loosely.   Whatever endows people with the desire to go underground exploring is beyond my limited imagination, and long may it stay that way. I might also add I am one of those people who possess absolutely no sense of direction, I get lost very easily.

My wife, a woman of few words, shortens this problem by saying I simply have no sense.

Liked your photos Cider.

Those two little girls looked so very happy and they enjoyed their adventure in the caves and tunnels.

Bet they had a lot to tell when they got home.