Điền từ thích hợp vào chỗ trống

----- Nội dung dịch tự động từ ảnh -----
ust 2013, the first tourist group explored the cave on a
tour. Permits are now required to access the cave
e made available on a (9)
00 permits were issued for the 2015 season, which
om February to August. After August, heavy rains
river ievels to rise and make the cave largely
basis. 9. LIMIT
10. ACCESS