Yara Nardi / Reuters

A view of the Blue Grotto, one of the main tourist attractions on the island of Capri. The grotto would normally have around 20-25 boats of people inside the cave, but is instead empty and closed while the island awaits the return of tourists and the summer season, in Capri, Italy, on April 28, 2021.

2021年4月28日，意大利卡普里岛的蓝洞景观。蓝洞是卡普里岛上的主要旅游景点之一，洞内通常可以容纳20-25艘船，但是在夏季和游客来临之前，该洞是关闭的。