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![Cirque in Dyrdal in Lindås](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/mas_22.jpg?itok=YmoL_BEr)
Dyrdal
If you journey along Austfjorden, you at the same time turn the pages of time back through Ice Age history. The landforms show how the landscape has developed gradually as the glaciers have grown - and melted again - in several episodes: from small cirques, we see innermost at Dyrdal, to larger fjords, like at Mas fjord further out.
![Two of the rowlocks which have been found in the bogs Mangersnes, Radøy](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/kvh_301-3.jpg?itok=UOKNndXl)
![Hetlefloten i Os](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/723.jpg?itok=iwhgEn9w)
![Geologist William Helland-Hansen examining a quartz conglomerate in the Ulven Syncline on one of the hills by the north west end of Lake Ulvenvatnet.](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/232/os_31.jpg?itok=kdZe21Du)
Ulven
In the region of Ulven phyllite occurs with Hordaland's youngest fossils, and a beautiful quartz conglomerate. The phyllite and conglomerate got squeezed into the bottom of an ancient oceanic crust, made of gabbro and greenstone, in the heart of the Caledonide mountain chain.
![From](https://www.grind.no/sites/default/files/styles/medium/public/bilder/sted/190/nvh_312_vaksinen_ulven_150.jpg?itok=P4DdHVu-)