From: Zagreb, Croatia
Maybe you can help me with a geography question of mine.
My family traveled through Europe together some while ago. We leased a car and drove through much of France, Germany, Italy (God help us...we drove in Italy) and some of the low-lying countries.
At my insistence, we drove into (then) Yugoslavia from Italy. We drove across the border near Trieste (didn't that used to be Yugoslavia-now Italy?) and into Yugoslavia from there. We spent a couple days in the area, visiting some of the beaches (rocky, but beautiful) and other 'touristy' things in the area.
I specifically remember taking a long train ride through a massive underground cavern system. Fascinating and beautiful trip on a miniature underground train. A bit unnerving at times too! Does this sound familiar? Is there a renowned attraction in Western or SW (modern day) Croatia?
Andre, from Trieste you enter now day Slovenia:
They do have fantastic cavern system called "Postojna Cave":
I think that is where you have been...
But as far beaches go Slovenia has very very small sea coat - IMHO there is 99% possibility that your seaside days were spend in Croatia....
Prior Preparation & Planning Prevents Pathetically Poor Performance!
A & B: WitW, WitE, WbtS, GGWaW, GGWaW2-AWD, HttR, CotA, BftB, CF
P: UV, WitP, WitP-AE