Pongo de Manseriche

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The Pongo de Manseriche is a gorge in northwest

The Pongo ('gate' in

According to Captain Carvajal, who descended the Pongo in the little steamer Napo, in 1868, it is a vast rent in the Andes about 2,000 ft (610 m) deep, narrowing in places to a width of only 100 ft (30 m), the precipices "seeming to close in at the top."^{[This quote needs a citation]} Through this dark canyon the Marañón leaps along, at times, at the rate of 12 mph (19 km/h).

The Pongo de Manseriche was first discovered (by Europeans) by the Spanish