buzdağının görünen ucu

listen to the pronunciation of buzdağının görünen ucu
Türkçe - İngilizce
(deyim) tip of the iceberg
Only the beginning; just a small indication of a larger possibility; a problem is much bigger than it seems

This is only the tip of the iceberg. Our problems can become much worse.

small revealed section of a larger hidden issue
A small evident part or aspect of something largely hidden: afraid that these few reported cases of the disease might only be the tip of the iceberg