Laos by Provinces

• Houaphan Province
• Vieng Xai Cave City

• Khammouane Province
• Tham Kong Lor
• Tham Nang Ene
• Tham Pa Fa
• Tham Xe Bang Fai

• Louang Namtha Province
• Tham Kao Rao
• Phou Prasat

• Louangphabang Province
• Tham Doun
• Kuang Si Falls
• Tham Pak Ou
• Tham Pha Kouang
• Tham Pha Tok

• Oudomaxai Province
• Tham Chom Ong

• Vientiane Province
• Tham Hoi
• Tham Xang

• Xiangkhouang Province
• Tham Piew