B\u1ea1n \u0111\u00e3 t\u1eebng nh\u00ecn th\u1ea5y nh\u0169 \u0111\u00e1 v\u00e0 m\u0103ng \u0111\u00e1 ch\u01b0a? B\u1ea1n c\u00f3 th\u1ec3 t\u1edbi Qu\u1ea3ng B\u00ecnh, th\u0103m Phong Nha-K\u1ebb B\u1ea3ng, \u1edf \u0111\u00f3 c\u00f3 r\u1ea5t nhi\u1ec1u nh\u0169 \u0111\u00e1 v\u00e0 m\u0103ng \u0111\u00e1. Nh\u0169 \u0111\u00e1 v\u00e0 m\u0103ng \u0111\u00e1, m\u1ed9t nh\u01b0 b\u0103ng tuy\u1ebft m\u00f9a \u0111\u00f4ng nh\u1ecf xu\u1ed1ng t\u1eeb m\u00e1i nh\u00e0, m\u1ed9t nh\u01b0 m\u0103ng tr\u00fac m\u00f9a xu\u00e2n nh\u00fa l\u00ean t\u1eeb m\u1eb7t \u0111\u1ea5t.<\/p>\n\n\n\n
Nh\u1eefng hang \u0111\u1ed9ng c\u00f3 nh\u0169 \u0111\u00e1 v\u00e0 m\u0103ng \u0111\u00e1 \u0111\u1ec1u ph\u1ea3i l\u00e0 hang \u0111\u1ed9ng \u0111\u00e1 v\u00f4i. T r\u00ean \u0111\u1ec9nh hang c\u00f3 r\u1ea5t nhi\u1ec1u khe n\u1ee9t, v\u00e0 t\u1eeb m\u1ed7i khe n\u1ee9t \u1ea5y, n\u01b0\u1edbc t\u1eebng gi\u1ecdt t\u1eebng gi\u1ecdt nh\u1ecf xu\u1ed1ng. Khi n\u01b0\u1edbc b\u1ed1c h\u01a1i h\u1ebft, c\u00f2n l\u1eafng l\u1ea1i l\u00e0 ch\u00fat canxi. Qu\u00e1 tr\u00ecnh t\u00edch l\u0169y canxi l\u1eafng \u0111\u1ecdng nh\u01b0 th\u1ebf, cu\u1ed1i c\u00f9ng h\u00ecnh th\u00e0nh nh\u0169 \u0111\u00e1 (c\u00f2n g\u1ecdi l\u00e0 th\u1ea1ch nh\u0169). \u0110\u00e2y l\u00e0 th\u1eddi k\u00ec \u0111\u1ea7u c\u1ee7a nh\u0169 \u0111\u00e1. V\u1ec1 sau, b\u00ean ngo\u00e0i nh\u0169 \u0111\u00e1 l\u1ea1i \u0111\u01b0\u1ee3c bao ph\u1ee7 b\u1edfi t\u1ea7ng t\u1ea7ng l\u1edbp l\u1edbp \u0111\u00e1 v\u00f4i, m\u1ed7i l\u00fac m\u1ed9t nhi\u1ec1u, m\u1ed7i l\u00fac m\u1ed9t d\u00e0i. Th\u1eadm ch\u00ed, c\u00f3 nh\u1eefng nh\u0169 \u0111\u00e1 d\u00e0i t\u1edbi c\u1ea3 m\u1ea5y m\u00e9t.<\/p>\n\n\n\n
M\u0103ng \u0111\u00e1 l\u00e0 ng\u01b0\u1eddi b\u1ea1n \u0111\u1ed3ng h\u00e0nh th\u00e2n thi\u1ebft c\u1ee7a nh\u0169 \u0111\u00e1. Khi n\u01b0\u1edbc t\u1eeb tr\u00ean \u0111\u1ec9nh hang nh\u1ecf xu\u1ed1ng, \u0111\u00e1 v\u00f4i c\u0169ng \u0111\u01b0\u1ee3c t\u00edch l\u0169y d\u01b0\u1edbi m\u1eb7t \u0111\u1ea5t. C\u1ee9 nh\u01b0 v\u1eady, m\u0103ng \u0111\u00e1 v\u01b0\u01a1n cao, h\u01b0\u1edbng l\u00ean ph\u00eda nh\u0169 \u0111\u00e1. C\u00f3 th\u1ec3 n\u00f3i, nh\u0169 \u0111\u00e1 l\u00e0 \u201cti\u1ec1n b\u1ed1i\u201d v\u00e0 \u201cm\u0103ng \u0111\u00e1\u201d l\u00e0 \u201ch\u1eadu b\u1ed1i\u201d v\u1eady. V\u00ec ph\u00e1t kh\u1edfi t\u1eeb \u0111\u1ea5t, di\u1ec7n t\u00edch b\u00e1m tr\u1ee5 l\u1edbn, v\u1eefng ch\u00e3i, kh\u00f4ng d\u1ec5 b\u1ecb ng\u1eaft \u0111o\u1ea1n, n\u00ean m\u0103ng \u0111\u00e1 th\u01b0\u1eddng ph\u00e1t tri\u1ec3n nhanh g\u1ea5p m\u1ea5y l\u1ea7n nh\u0169 \u0111\u00e1. M\u0103ng \u0111\u00e1 cao nh\u1ea5t c\u00f3 khi \u0111\u1ea1t t\u1edbi 30 m, gi\u1ed1ng nh\u01b0 m\u1ed9t th\u00e1p \u0111\u00e1, v\u1eefng ch\u00e3i \u0111\u1ee9ng tr\u00ean m\u1eb7t \u0111\u1ea5t.<\/p>\n\n\n\n
Nh\u0169 \u0111\u00e1 v\u00e0 m\u0103ng \u0111\u00e1 c\u0169ng c\u00f3 khi ti\u1ebfp x\u00fac v\u1edbi nhau, g\u1eafn k\u1ebft l\u1ea1i th\u00e0nh c\u1ed9t \u0111\u00e1, hai \u0111\u1ea7u to th\u00f4, \u1edf gi\u1eefa l\u1ea1i m\u1ea3nh, ng\u01b0\u1eddi kh\u00f4ng bi\u1ebft l\u1ea1i cho r\u1eb1ng c\u00f3 ai \u0111\u1ee5c \u0111\u1ebdo n\u00ean th\u1ebf. Trong r\u1ea5t nhi\u1ec1u hang \u0111\u00e1 v\u00f4i, nh\u0169 \u0111\u00e1 v\u00e0 m\u0103ng \u0111\u00e1 kh\u00f4ng ph\u1ea3i l\u00fac n\u00e0o c\u0169ng li\u1ec1n k\u1ec1, li\u00ean k\u1ebft v\u1edbi nhau. Nguy\u00ean nh\u00e2n l\u00e0 nh\u0169 \u0111\u00e1 b\u1ecb \u0111\u1ee9t \u0111o\u1ea1n, \u0111\u00e1 v\u00f4i ch\u1eb7n d\u00f2ng ch\u1ea3y c\u1ee7a n\u01b0\u1edbc, n\u01b0\u1edbc bu\u1ed9c ph\u1ea3i chuy\u1ec3n h\u01b0\u1edbng, v\u00ec th\u1ebf m\u00e0 l\u1ea1i c\u00f3 m\u1ed9t nh\u0169 \u0111\u00e1 kh\u00e1c ra \u0111\u1eddi. C\u1ee9 nh\u01b0 th\u1ebf, nh\u0169 \u0111\u00e1 v\u00e0 m\u0103ng \u0111\u00e1 ch\u1ea3 bao gi\u1edd \u201cch\u1ea1m m\u1eb7t\u201d.<\/p>\n\n\n\n
N\u01b0\u1edbc d\u01b0\u1edbi l\u00f2ng \u0111\u1ea5t th\u1eadt gi\u1ed1ng nh\u01b0 m\u1ed9t ngh\u1ec7 s\u1ef9 \u0111i\u00eau kh\u1eafc t\u00e0i ba. Nh\u1eefng n\u01a1i n\u01b0\u1edbc \u0111i qua, nh\u1eefng d\u1ea5u v\u1ebft n\u01b0\u1edbc \u0111\u1ec3 l\u1ea1i, khi th\u00ec l\u00e0 m\u1ed9t khe su\u1ed1i, l\u00fac l\u1ea1i l\u00e0 hang \u0111\u1ed9ng, ho\u1eb7c l\u00e0 nh\u0169 \u0111\u00e1, m\u0103ng \u0111\u00e1 v\u00e0 r\u1ea5t nhi\u1ec1u \u0111i\u1ec1u tuy\u1ec7t di\u1ec7u kh\u00e1c. T \u1ea5t c\u1ea3 t\u1ea1o n\u00ean m\u1ed9t c\u1ea3nh s\u1eafc thi\u00ean nhi\u00ean v\u00f4 c\u00f9ng xinh \u0111\u1eb9p.<\/p>\n\n\n\n
T \u1eeb kho\u00e1: Nh\u0169 \u0111\u00e1; M\u0103ng \u0111\u00e1.<\/p>\n","protected":false},"excerpt":{"rendered":"
B\u1ea1n \u0111\u00e3 t\u1eebng nh\u00ecn th\u1ea5y nh\u0169 \u0111\u00e1 v\u00e0 m\u0103ng \u0111\u00e1 ch\u01b0a? B\u1ea1n c\u00f3 th\u1ec3 t\u1edbi Qu\u1ea3ng B\u00ecnh, th\u0103m Phong Nha-K\u1ebb B\u1ea3ng, \u1edf \u0111\u00f3 c\u00f3 r\u1ea5t nhi\u1ec1u nh\u0169 \u0111\u00e1 v\u00e0 m\u0103ng \u0111\u00e1. Nh\u0169 \u0111\u00e1 v\u00e0 m\u0103ng \u0111\u00e1, m\u1ed9t nh\u01b0 b\u0103ng tuy\u1ebft m\u00f9a \u0111\u00f4ng nh\u1ecf xu\u1ed1ng t\u1eeb m\u00e1i nh\u00e0, m\u1ed9t nh\u01b0 m\u0103ng tr\u00fac m\u00f9a xu\u00e2n nh\u00fa l\u00ean […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":"","_disable_autopaging":false},"categories":[15,19],"tags":[],"class_list":["post-10143","post","type-post","status-publish","format-standard","hentry","category-hoi-dap-khoa-hoc","category-tu-nhien"],"_links":{"self":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/10143","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/comments?post=10143"}],"version-history":[{"count":0,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/posts\/10143\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/media?parent=10143"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/categories?post=10143"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.vietlearn.org\/kien-thuc\/wp-json\/wp\/v2\/tags?post=10143"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}