Definition of "Matterhorn"

A second feature is the Matterhorn of inflation that dominates the scene. The average postwar recession showed a 1.4 per cent decline in industrial wholesale prices.

1970 August 14, Henry J. Taylor, “Where Do We Stand Now?”, in Prescott Evening Courier

Meanwhile, soaring oil prices and plummeting real energy yields from liquid fuels have already left economic carnage in their wake, as a fragile global financial system perched on a Matterhorn of debt has been dealt blow after blow by the failure of the real economy to expand as expected.

2012, Richard Heinberg, Hedge your Bets in the Peak Oil Debate