Blame it on Mount Agung.

Stranger Things star Millie Bobby Brown has been stuck on the island of Bali, Indonesia, by a weeklong volcanic eruption.

Brown took to Instagram to post pictures of herself making the most of the forced downtime — meditating in a garden, strolling around the hotel grounds and hanging out with the hotel staff.

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"I just wanted to let you know that I have been in Bali after traveling through Australia. I wasn’t able to return home after a four day break turned into 10 days due to the volcano," Brown wrote.

Hi guys, I just wanted to let you know that I have been in Bali after traveling through Australia. I wasn't able to return home after a four day break turned into 10 days due to the volcano. I would really love to thank all of the staff at the @themuliabali for taking such good care of us while having to extend our stay here; I cannot thank you enough! Also, to the Balinese people who are the sweetest, kindest and most humble people I've ever met. But most of all, my thoughts and prayers are with the people whose lives have been affected by this. I truly hope everyone there stays safe. Sending all my love to Bali❤️ Until next time 🙏❤️ @virginaustralia

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Brown thanked the Balinese people "who are the sweetest, kindest and most humble people I've ever met" and the hotel staff for taking care of her during the extended stay.

"But most of all, my thoughts and prayers are with the people whose lives have been affected by this," said Brown.

More: Indonesia is home to more than 139 volcanoes, and a few are erupting at any given time

The Associated Press reported that Bali airport reopened Wednesday after being closed for 2 1/2 days and thousands of tourists are now leaving the island. Authorities have told tens of thousands of people to leave an area extending 6 miles from the volcano as it belches volcanic materials into the air.

Mount Agung's last major eruption in 1963 killed about 1,100 people.