1. The dolmens were constructed from glacial erratic boulders and red sandstone. 2. His monument is surmounted by a glacial erratic boulder which shows jasper inclusions. 3. In addition, large erratic boulders are spread over the land. 4. This is named for The Ullstone, a prominent erratic boulder . 5. The "'Norber erratics "'are one of the finest groups of glacial erratic boulders in Britain. 6. The "'Giebichenstein "'in St�ckse, Germany, is one of the largest erratic boulders of northern Germany. 7. Analysis of the data revealed giant sand waves, huge glacial erratic boulders and several uncharted wrecks. 8. The geologist Charles Lyell asked FitzRoy to record observations on geological features such as erratic boulders . 9. FitzRoy took a request from Lyell to record observations on geological features, such as erratic boulders . 10. Teeming vernal pools, glacial erratic boulders , mature forests, and maintained woodland meadows are found throughout the area.
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