The Initiation well of Quinta da Regaleira in Sintra Portugal. It's a 27 meter staircase that leads straight down underground and connects with other tunnels via underground walkways
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- 大图:5760 × 3840 像素·48.77 cm × 32.51 cm·300dpi·JPG
- 中图:1000 × 667 像素·35.28 cm × 23.53 cm·72dpi·JPG
- 小图:500 × 333 像素·17.64 cm × 11.75 cm·72dpi·JPG