When did the British explorers find the whole impressive ecosystem

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5. When did the British explorers find the whole impressive ecosystem?
6. Is Son Doong Cave one of the world's greatest natural wonders?
II. Fill in each blank with a word in the box.
mountains fields destination
on more natural
Lak Lake's name evokes curiosity and charm for visitors that wish to explore this wild
beauty and fresh air, adventure elephant riding
beauty. In addition to the (1).
and taking one-piece timber boat (2)
Lak Lake make this place become an
indispensable (3).
for tours to Dak Lak and the Central Highlands. Lak Lake
is a beautiful landscape of the Central Highlands. It is both a source of fish and a gigantic
freshwater reservoir supplying water to hundreds of hectares of rice (4)
, and
also makes the climate here cooler. This is a natural lake with the greatest depth which is
(5)
than T'nung Lake in Gia Lai province. Lak Lake is 5 km wide, adopted
with Krong Ana River. The water always looks deep and blue. The lake is surrounded by
high (6)
making its water appear calm; and having the vast primeval forests
with abundant flora and fauna.