수백년을 버틴 돌다리의 비밀

<div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin" data-link="https://cafe.daum.net/subdued20club" data-link-newwindow="_blank"><a href="https://cafe.daum.net/subdued20club" target="_blank" class="ke-link"><img src="https://t1.daumcdn.net/cafeattach/1IHuH/c66b4a1a23c64192bd183f48a1868843d96257d5" width="288" height="288" data-img-src="https://t1.daumcdn.net/cafeattach/1IHuH/c66b4a1a23c64192bd183f48a1868843d96257d5" data-origin-width="1024" data-origin-height="1024"></a></div><p style="text-align: center;">출처: <a href="https://youtube.com/shorts/IP8exLzL0Kg?si=_VcYa1RvHDIEKLr9" target="_blank" class="ke-link"></a><a href="https://youtube.com/shorts/IP8exLzL0Kg?si=_VcYa1RvHDIEKLr9" target="_blank" class="ke-link"></a><a href="https://youtube.com/shorts/IP8exLzL0Kg?si=_VcYa1RvHDIEKLr9" target="_blank" class="ke-link">https://youtube.com/shorts/IP8exLzL0Kg?si=_VcYa1RvHDIEKLr9</a></p><div class="figure-video" data-ke-type="video" data-video-url="https://www.youtube.com/shorts/IP8exLzL0Kg" data-video-host="youtube" data-video-play-service="daum_cafe" data-video-width="405" data-video-height="720" data-ke-style="alignCenter" data-video-thumbnail="http://scrap.kakaocdn.net/dn/bXnzYZ/dJMb8QeiprV/HHiPcboOUhGeTJwmcNjH3K/kakaolink40_original.jpg?width=405&height=720" data-ke-mobile-mobilestyle="widthFull" data-video-origin-width="405" data-video-origin-height="720"><iframe src="https://www.youtube.com/embed/IP8exLzL0Kg" width="405" height="720" frameborder="0" scrolling="no" allowfullscreen=""></iframe><div class="figcaption"></div></div><div class="figure-img" data-ke-type="image" data-ke-style="alignCenter" data-ke-mobilestyle="widthOrigin"><img src="https://t1.daumcdn.net/cafeattach/1IHuH/c82412e01b2b287b8a84c839a61e746821eec89b" class="txc-image" data-img-src="https://t1.daumcdn.net/cafeattach/1IHuH/c82412e01b2b287b8a84c839a61e746821eec89b" data-origin-width="939" data-origin-height="1375"></div><p style="text-align: left;">옛날 사람들은 참 똑똑했다.</p>