The Cologne Islands, a coffee-growing region, was formed by huge undersea volcanic eruptions four or five million years ago.

The Cologne Islands were formed by huge undersea volcanic eruptions four or five million years ago and rose to the surface more than a million years ago. Volcanic eruptions on the island still occur from time to time, and volcanoes on Isabella and Fernandina, the westernmost island of the archipelago, have not stopped, with the most recent two eruptions in 1995 and 1998. In September 1998, the Alsedo (Alquito) volcano (1097 meters) on Isabella Island erupted and lava flowed into the habitat of elephant turtles, and the Ecuadorian government sent helicopters to rescue it, which became hot news at that time. The volcano here is not high, but the area is very large, a volcano no more than a kilometer above sea level, the Cologne archipelago with a diameter of up to 20 kilometers is made up of volcanic piles and shield volcanoes; several island volcanoes erupted in the 20th century. High volcanoes, craters and rocky cliffs form the rugged topography of the island. Isabella (also known as Albemarle) is the largest island in the archipelago, with a length of about 132km (82 li), accounting for more than 1x2 of the total land area.

There are seven large islands in the second archipelago.

The archipelago consists of 7 large islands, 23 small islands and more than 50 reefs, of which IslaIsabela is the largest. The archipelago consists entirely of volcanic piles and lava. The equator runs across the north. Due to the cold current in Peru, the climate is cool and extremely dry. There are strange animal giant turtles and large lizards on the island. Darwin came here in 1835 to visit the Galapagos Islands (Spanish: Archipi é Lago de Col ó n, Taiwan translated as the Galapagos Islands), officially known as the Columbus Islands (Columbus Islands).

When the island was first discovered, it was called "Skantadas Island" (Spanish meaning "Devil Island"). Because there are many large turtles on the island, it was later called the "Galapagos Islands" (Galapagos Islands), meaning "the island of giant turtles". After the Republic of Ecuador ruled the islands, it changed its name to "Cologne Islands"