Industry WIKI

A fixed exchange rate, often called a pegged exchange rate or pegging, is a type of exchange rate regime in which a currency's value is fixed, or pegged, by a monetary authority against the value of another currency, a basket of other currencies, or another measure of value, such as gold or silver.

The snake in the tunnel was a system of European monetary cooperation in the 1970s which aimed at limiting fluctuations between different European currencies. It was the first attempt at European monetary cooperation. It attempted to create a single currency band for the European Economic Community (EEC), essentially pegging all the EEC currencies to one another.