Google Doodle depicts the image of a giant sinkhole deep inside the cave with illuminating sunlight in honor of the day that local Ho Khanh and experts of the British Cave Research Association finished their exploration and declared Son Doong the world's largest cave on April 14, 2009.

A screenshot from Google Doodle shows the image of a giant sinkhole deep inside Son Doong cave with illuminating sunlight on its homepage on April 14, 2022.

The image appears not just in Vietnam but 16 other countries: Argentina, Chile, Costa Rica, Dominica, El Salvador, Greece, Guatemala, Honduras, Mexico, Moldova, Romania, Singapore, Sweden, Thailand, Virgin Islands and the U.K.

The Google Doodle is a special temporary presentation that commemorates holidays, events, achievements and people.

Son Doong, part of Phong Nha-Ke Bang National Park in central Vietnam, has hogged the international spotlight since it opened to tourists in 2013.

It comprises at least 150 individual caves, a dense subterranean jungle and several underground rivers.

Tours to Son Doong only allows up to 1,000 visitors per year for conservation reasons, and are only available from January to August.

In 2019, Google also honored Hoi An ancient town on its homepage.

Cave in to the wonders of Tu Lan in central Vietnam

An extraordinary journey through six wet and dry caves can be enjoyed over three days in Quang Binh Province, Vietnam’s cave kingdom. Welcome to Tu Lan.

BBC crew arrives in Son Doong to film world’s largest cave

A BBC film crew has arrived at Phong Nha-Ke Bang National Park, in Vietnam’s central province of Quang Binh to produce a documentary on Son Doong, the largest cave in the world.

Unique cave complex in Cao Phong town of Hoa Binh province

The cave complex of Dau Rong mountain in Cao Phong town, of the northern mountainous province of Hoa Binh, which is about 1km from National Highway 6, was discovered more than ten years ago. There are many large and small caves, which were named based on their own natural characteristics.

Phong Nha Cave night tours offer visitors a new experience

The Phong Nha - Ke Bang Tourism Centre has introduced a number of new tourism experiences. Among the most unique are tours exploring Phong Nha Cave at night - a new tourism offering that promises to attract more visitors to Quang Binh province.

Va Cave: a masterpiece of stalagmites

Va Cave, deep inside Phong Nha-Ke Bang National Park in central Vietnam, has more than 100 cone-shaped stalagmites that rise from clear green water.

Source: VnExpress