{"id":992,"date":"2025-04-07T02:18:16","date_gmt":"2025-04-07T07:18:16","guid":{"rendered":"https:\/\/happymazes.com\/cy\/15-ogof-mammoth-drysfa-10000-oed-o-dan-y-ddaear\/"},"modified":"2025-04-07T02:18:16","modified_gmt":"2025-04-07T07:18:16","slug":"15-ogof-mammoth-drysfa-10000-oed-o-dan-y-ddaear","status":"publish","type":"post","link":"https:\/\/happymazes.com\/cy\/15-ogof-mammoth-drysfa-10000-oed-o-dan-y-ddaear\/","title":{"rendered":"15-Ogof Mammoth: drysfa 10,000 oed o dan y Ddaear\u200c"},"content":{"rendered":"

\n
\n Ble mae? \u200c
\n <\/strong>\n<\/p>\n

\n Yn gudd ym Mharc Cenedlaethol Ogof Ogof Mammoth Kentucky (UDA) mae system ogof\u00e2u hiraf y byd – \u200cmammoth Cave\u200c. Mae'r ddrysfa danddaearol hon yn ymestyn dros 676 cilomedr, ond dywed gwyddonwyr fod mwy i'w ddarganfod o hyd!\n<\/p>\n

\n \"mammoth-cave-1\"
\n<\/figure>\n

\n
\n Cyfrinachau Hynafol Pobl Gynhenid\u200c
\n <\/strong>\n<\/p>\n

\n 5,000 o flynyddoedd yn \u00f4l, daeth Americanwyr Brodorol o hyd i'r ogof. Fe wnaethant gloddio mwynau, claddu eu meirw, a gadael marciau fflachlamp ar \u00f4l. Anghofiwyd yr ogof tan ddiwedd y 1700au, pan wnaeth helwyr fynd ar \u00f4l arth ailddarganfod ei fynedfa.\n<\/p>\n

\n \"mammoth-cave-2\"
\n<\/figure>\n

\n
\n Pa mor gymhleth yw'r ddrysfa? \u200c
\n <\/strong>\n<\/p>\n

\n 1\ufe0f\u20e3 \u200cmultiple Lefelau\u200c: Mae gan yr ogof 5 haen o dwneli wedi'u pentyrru. Mae llwybrau'n rhannu fel gwreiddiau coed, gyda phennau marw, pyllau dwfn, ac afonydd tanddaearol sydyn yn blocio'r ffordd.\n<\/p>\n

\n \"mammoth-cave-2\"
\n<\/figure>\n

\n 2\ufe0f\u20e3 \u200cDark Afonydd a nwy gwenwyn\u200c: Mae gan rai ardaloedd garbon monocsid marwol. Mae afonydd tanddaearol yn rhedeg 10 metr o ddyfnder – roedd archwilwyr mawr yn defnyddio rafftiau a fflachlampau!\n<\/p>\n

\n \"mammoth-cave-3\"
\n<\/figure>\n

\n 3\ufe0f\u20e3 \u200cLiving Fossils\u200c: Mae'r ogof yn gartref i bysgod dall, berdys di -lygaid, a chriciaid prin nad ydyn nhw erioed wedi gweld golau haul.\n<\/p>\n

\n
\n Pwy fapiodd y ddrysfa? \u200c
\n <\/strong>\n<\/p>\n

\n 1\ufe0f\u20e3 \u200c19fed-ganrif Explorer\u200c: Stephen Bishop, canllaw du, rhaffau a chanhwyllau wedi'u defnyddio i fapio 24 cilomedr o dwneli. Daeth o hyd i ryfeddodau fel y \u201cpwll diwaelod.\u201d\n<\/p>\n

\n \"mammoth-cave-4\"
\n<\/figure>\n

\n 2\ufe0f\u20e3 \u200cmodern laserau\u200c: Yn 2020, datgelodd sganiau 3D dwneli newydd, ond mae 600 cilomedr yn parhau i fod heb eu harchwilio gan fodau dynol.\n<\/p>\n

\n \"mammoth-cave-5\"
\n<\/figure>\n

\n
\n Pam \u201cMammoth\u201d? \u200c
\n <\/strong>\n<\/p>\n

\n Daw'r enw o'i faint \u200cgiant\u200c, nid mamothiaid gwlanog (dim ffosiliau mamoth a geir yma!). Gallai ei siambrau ffitio 1,500 o gaeau p\u00eal -droed!\n<\/p>\n

\n
\n Straeon Antur\u200c
\n <\/strong>\n<\/p>\n

\n \u25b6 \ufe0f \u200c The Trasic Tale of Floyd Collins\u200c\n<\/p>\n

\n Ym 1925, daeth yr Archwiliwr Floyd Collins yn gaeth mewn twnnel cul wrth geisio dod o hyd i fynedfa newydd. Gweithiodd achubwyr am ddyddiau i'w ryddhau, ond bu farw cyn y gallent ei gyrraedd. Gwnaeth ei stori benawdau ac arwain at reolau ogof\u00e2u mwy diogel.\n<\/p>\n

\n \"mammoth-cave-6\"
\n<\/figure>\n

\n \u25b6 \ufe0f \u200c y darganfyddiad \u201cllyn crisial \u201d\u200c\n<\/p>\n

\n Ym 1960, nofiodd deifwyr trwy afonydd Icy Underground a dod o hyd i siambr gudd wedi'i llenwi \u00e2 d\u0175r clir-grisial. Fe wnaethant ei enwi\u2019n \u201cCrystal Lake,\u201d gan brofi bod yr ogof hyd yn oed yn fwy nag yr oedd unrhyw un yn ei feddwl.\n<\/p>\n

\n \"mammoth-cave-7\"
\n<\/figure>\n

\n \u25b6 \ufe0f \u200cghostly lleisiau? \u200c\n<\/p>\n

\n Yn yr 1800au, honnodd tywyswyr eu bod yn clywed sibrwd yn nhwneli \u201cGothic Avenue\u201d yr ogof. Yn ddiweddarach, canfu gwyddonwyr mai dim ond gwynt oedd yn chwibanu trwy graciau – ond mae ymwelwyr yn dal i j\u00f4c am \u201cOgof Ghosts\u201d!\n<\/p>\n

\n \"mammoth-cave-8\"
\n<\/figure>\n

\n \u25b6 \ufe0f Dirgelwch Llwybr Papur\u200c\n<\/p>\n

\n Yn y 1940au, gollyngodd fforwyr bapur i mewn i afon i olrhain ei lif – ailymddangosodd y papur 32 cilomedr i ffwrdd, gan ddatgelu rhwydwaith d\u0175r cyfrinachol!\n<\/p>\n

\n \"mammoth-cave-9\"
\n<\/figure>\n

\n \u25b6 \ufe0f \u200csurvival mewn tywyllwch\u200c\n<\/p>\n

\n Yn 1972, aeth t\u00eem ar goll am 7 diwrnod. Fe wnaethant lyfu d\u0175r oddi ar greigiau a dilyn baw ystlumod i ddod o hyd i'w ffordd allan. \u201cMae ystlumod yn cas\u00e1u diwedd marw hefyd,\u201d meddai un goroeswr.\n<\/p>\n

\n
\n Allwch chi ymweld? \u200c
\n <\/strong>\n<\/p>\n

\n \u2705 Mae rhai ardaloedd ar agor ar gyfer teithiau-o deithiau cerdded hawdd 1 awr i ddringfeydd eithafol 6 awr.\n<\/p>\n

\n \u26a0\ufe0f Ond mae 99% o'r ogof y tu hwnt i derfynau-mae'n rhy hawdd mynd ar goll, ac nid yw \u200cGPS yn gweithio o dan y ddaear! \u200c\n<\/p>\n

\n
\n Mwy o wefr\u200c:
\n <\/strong>\n<\/p>\n

\n Yn 1983, gwasgodd fforwyr trwy dwll o\u2019r enw \u201cThe Meat Grinder\u201d i ddod o hyd i dwneli newydd.\n<\/p>\n

\n Yn 2017, merch 13 oed oedd yr ieuengaf i gwblhau taith gropian beryglus 6 awr!\n<\/p>\n

\n (Ffynhonnell: Archifau Parc Cenedlaethol Ogof Mammoth)\n<\/p>\n

\n
\n Sylwch fod yr erthygl hon wedi'i chyfieithu o'i fersiwn Saesneg gan Google Translator.
\n <\/em>\n<\/p><\/p>\n","protected":false},"excerpt":{"rendered":"

Ble mae? \u200c Cudd ym Mharc Cenedlaethol Ogof Ogof Mammoth Kentucky (UDA) yn gorwedd system ogof\u00e2u hiraf y byd – ogof \u200cmammoth\u200c. Mae'r ddrysfa danddaearol hon yn ymestyn dros 676 cilomedr, ond dywed gwyddonwyr fod mwy i'w ddarganfod o hyd! Cyfrinachau hynafol pobl frodorol\u200c 5,000 o flynyddoedd yn \u00f4l, daeth Americanwyr Brodorol o hyd i'r ogof. Fe wnaethant gloddio mwynau, claddu eu meirw, a gadael fflachlamp [\u2026]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","_surecart_dashboard_logo_width":"180px","_surecart_dashboard_show_logo":true,"_surecart_dashboard_navigation_orders":true,"_surecart_dashboard_navigation_invoices":true,"_surecart_dashboard_navigation_subscriptions":true,"_surecart_dashboard_navigation_downloads":true,"_surecart_dashboard_navigation_billing":true,"_surecart_dashboard_navigation_account":true,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[],"tags":[],"class_list":["post-992","post","type-post","status-publish","format-standard","hentry"],"aioseo_notices":[],"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"woocommerce_thumbnail":false,"woocommerce_single":false,"woocommerce_gallery_thumbnail":false},"uagb_author_info":{"display_name":"bamstone","author_link":"https:\/\/happymazes.com\/cy\/author\/bamstoneoutlook-com\/"},"uagb_comment_info":0,"uagb_excerpt":"Ble mae? \u200c Cudd ym Mharc Cenedlaethol Ogof Ogof Mammoth Kentucky (UDA) yn gorwedd system ogof\u00e2u hiraf y byd - ogof \u200cmammoth\u200c. Mae'r ddrysfa danddaearol hon yn ymestyn dros 676 cilomedr, ond dywed gwyddonwyr fod mwy i'w ddarganfod o hyd! Cyfrinachau hynafol pobl frodorol\u200c 5,000 o flynyddoedd yn \u00f4l, daeth Americanwyr Brodorol o hyd i'r…","_links":{"self":[{"href":"https:\/\/happymazes.com\/cy\/wp-json\/wp\/v2\/posts\/992"}],"collection":[{"href":"https:\/\/happymazes.com\/cy\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/happymazes.com\/cy\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/happymazes.com\/cy\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/happymazes.com\/cy\/wp-json\/wp\/v2\/comments?post=992"}],"version-history":[{"count":0,"href":"https:\/\/happymazes.com\/cy\/wp-json\/wp\/v2\/posts\/992\/revisions"}],"wp:attachment":[{"href":"https:\/\/happymazes.com\/cy\/wp-json\/wp\/v2\/media?parent=992"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/happymazes.com\/cy\/wp-json\/wp\/v2\/categories?post=992"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/happymazes.com\/cy\/wp-json\/wp\/v2\/tags?post=992"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}