Located in An Hai Commune, Thoi Loi is the largest volcano on Ly Son Island, with its peak stretching 149 metres above sea level, making it the highest point on the island. The journey to explore the mountain peak becomes even more interesting as you pass by the island's largest freshwater lake. This lake also serves as a vital water source for irrigating the fields of onions and garlic, as well as meeting the daily needs of local residents. The hiking path takes visitors from the flagpole, heading south, gradually ascending to the natural basin resembling a giant funnel. This is also the crater of the volcano where streams of lava erupted millions of years ago, contributing to the unique landscape of today’s Ly Son.
At different times of the day, the surface of the lake displays distinct beauties, creating a colourful natural painting. In the morning, as the sun begins to rise from the east, gentle light bathes the surface of Thoi Loi Lake, giving it a fresh and clear blue hue. The early rays make the water sparkle as if sprinkled with silver. The surrounding area is quiet, with only the sound of birds chirping and the gentle breeze brushing the grass around the lake, crafting a refreshing and tranquil scene.
By midday, under the intense sunlight, the lake appears more vibrant with a deep blue shade. The vertical sunlight accentuates each tiny ripple on the surface. The water reflects the blue sky along with the drifting white clouds, creating a lively painting. At this time, although the air may feel hot, the deep blue of the lake brings a cooling and soothing sensation.
In the evening, after the sun sets, the surface of the lake turns almost black. The scene becomes still, with only the sound of the wind and the distant waves of the sea. The lake lies calm, like a large mirror reflecting the night sky, offering a sense of peace and quiet. In the darkness, Thoi Loi Lake seems to fall into slumber, waiting for the light of a new day. The first irrigation project on the island not only holds significant economic and livelihood importance for the locals but also attracts large numbers of visitors; it has become one of the island’s captivating tourist destinations.