In 1886, a Spanish expedition searched for this river, but did not find it.

An expedition could search that area for years, passing within two hundred meters of the city and failing to see it.

Previous expeditions had not searched the area because they thought it was ice-blocked.

However, this clue was ignored, and as late as 1980 an American expedition searched in vain for the site some 30 km away.

In 1839 Ross commanded an expedition searching for the South Pole.

The expedition landed in Southwest Greenland and searched for silver ore, which was not found.

An African expedition led by James Parker is searching for the elephant burial grounds.

Nathorst's expedition was searching for traces of the lost Andrée expedition.

Gobero was discovered in 2000 during an expedition (led by Paul Sereno) searching for dinosaur remains.

Many other historical sources of the Colonial period (16th to 18th centuries) refer to Paititi, to its possible locations and to expeditions searching for it.