prirodna podzemnaili podvodna šupljina (ili sustav šupljina) razvijena pretežito u vodoravnom smjeru. Nastaje najčešće u vapnenačkimstijenama mehaničkim i korozivnimdjelovanjem podzemnih voda.
I am not offering you SEO, neither PPC.
It's something completely different.
Just send me keywords of your interest and I'll give you traffic guarantees on each of them.
Let me demonstrate how it works and you will be surprised by the results.