Because the trail is on ridges, the views from any section are spectacular.

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"What's different about them is that spreading ridges on the Earth typically spread symmetrically about a rift, " he said.

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While serving as his uncle's apprentice, Perdix was inspired by the ridges on the backbone of a fish, and invented the handy cutting tool.

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Perhaps a fairer match for the new course would be against eight-year-old Cape Kidnappers in New Zealand, which runs along and around ridges on a secluded stretch of jagged coastline.

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It points downwards and has tactile ridges on it.

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These ridges take on a corkscrew form because matter spewing out from the spinning center of the galaxy moves in spirals.

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After their failed rebellion against Saddam Hussein, 500, 000 Kurds had been driven out of their homeland in northern Iraq and were camped on the desolate, wintry mountain ridges along the Iraq-Turkey border.

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"For example, even on a road surface with minor ridges or furrows, the driver no longer has to grip the steering wheel tightly and make detailed adjustments, so travelling on the intended path becomes easier, " it said in a statement.

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The thumb grip's pair of programmable rockers similarly won our favor because of their ridges up top -- like the thumb keys on Logitech's G700, we could press these just by slightly shifting the base of our thumb, leaving our thumbtip free to hold the red sniper button -- a feature we'll talk about later.

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The trail leads past a line of old-timers on a bench and climbs out of the yayla into wilder countryside, following mule tracks along rocky, mottled ridges.

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