Magnetic Hill in New Brunswick is an optical illusion that has fascinated tourists for decades . Even though it 's been demonstrated that the `` magnetic force '' is an optical illusion and the uphill slope is actually a downhill slope , that has n't stopped carloads of travelers from visiting Magnetic Hill and testing it for themselves . The Moeraki Boulders in New Zealand are what geologists call septarian concretions . They're made of a mixture of quartz and feldspar, which form when the magma cools down to liquid rock.
Magnetic Hill in New Brunswick is an optical illusion that has fascinated tourists for decades . The Moeraki Boulders in New Zealand are what geologists call septarian concretions . They're made of a mixture of quartz and feldspar, which form when the magma cools down to liquid rock.