德弗塔什卡洞, Devetaki村庄，保加利亚 Devetashka Cave, Devetaki, Bulgaria (© Jasmine_K/Shutterstock)

德弗塔什卡洞, Devetaki村庄，保加利亚 Devetashka Cave, Devetaki, Bulgaria (© Jasmine_K/Shutterstock)

雄伟的天然穹顶 The skylights are a nice touch

德弗塔什卡洞，保加利亚德韦塔基

走进德弗塔什卡洞穴深处，在保加利亚自然奇观中穿越时空。不过，这次探险有一个条件：你不能害怕蝙蝠！大约有3万只这种会飞的哺乳动物在此栖息。这个岩溶洞穴是碳酸盐岩被水溶解后形成的，现在属于公园的一部分。德弗塔什卡洞穴中的人类活动可以追溯到公元前7万年左右的早期石器时代，另外这里还发现了公元前6000—4000年的新石器时代手工艺品。洞中的几个大开口将自然光引入洞室，为摄影师和自然爱好者提供了更好的照明效果。

Devetashka Cave, Devetaki, Bulgaria

Step through time and into the cavernous depths of Devetashka Cave in Bulgaria, a sprawling prehistoric complex which humans called home for tens of thousands of years. These days, it is home to bats, about 30,000 of them, as well as rare birds and reptiles. This karst cave was formed by erosion and is now part of a public park. Humans are thought to have sought shelter here as far back as the Early Stone Age, about 70,000 years ago, and many Neolithic artefacts from 6000-4000 BCE have been discovered. Several large openings in the cave cast natural light into the chambers, offering better illumination for photographers and nature lovers alike.