Fjord

Fjord noun
1.a long, narrow, deep inlet of the sea between high cliffs, as in Norway and Iceland, typically formed by submergence of a glaciated valley.
2.The Fjord horse or Norwegian Fjord Horse (Norwegian: fjordhest) is a relatively small but very strong horse breed from the mountainous regions of western Norway. It is an agile breed of light draught horse build. All Fjord horses are dun in colour, with five variations in shade recognised in the breed standard.

The beautiful fjord ran through the mountains to the sea
The Fjord jumped over the cross-rail to get to the finish line of the cross-country course