科研之友
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摘要
This article is devoted to the territory that is recondite for mining activities. It is situated in a north part of the mountain range of Slansk谷 vrchy. There are villages that were known as mining villages in the past. The mining activities for gold, silver and mercury had only a local economical importance, beside of the output or production of opal. The output of opal on this territory was world noted, in the past. The aim of this article is to remit at some historical facts about former mines and to draw our attention to some attempts for building up, the educational and touristic path on this territory.
