Luke knew clearly that only by working together could they find the treasure, so he didn't want to conceal anything but rather wanted to gauge their attitude, and said, "There are two ways.

The first way is to find ancient navigation maps that are both old and detailed. Back then, the island's terrain where the treasure is hidden likely hadn't changed, allowing us to locate the treasure island by matching geographical positions.

The second way, if the island's terrain has changed, it's likely because vegetation has been destroyed, leading to soil erosion and some low areas being submerged by seawater.

But the central area of the island is often higher and won't be affected. We can compare the higher terrain areas of the treasure island."

Previously, Lilith had been comparing the overall terrain of the islands. If she felt an island's terrain didn't match, she would rule out the possibility of it being the treasure island. Upon reflection, what Luke said made sense, she might really have missed the treasure island.

Lilith picked up the yellow leather treasure map and said, "Finding ancient navigation maps that are both old and detailed might take some time.

I think the second method is better; it's quicker and more accurate to find the treasure island by comparing the higher terrain features."

Luke nodded noncommittally. Today was the first official day of treasure hunting, and it's still early enough to change the exploration method.

Lilith pursed her red lips and asked, "Should we tell Glasses Girl and Elsa Marin about the second treasure map?"

Luke smiled playfully, "Haven't you already told me?"

"You're different, I've always considered you a partner. I just hadn't found the right time to tell you.

They're more like a hire relationship."

Luke laughed, yeah right, I believe you.

This girl isn't just pretty but also sweet-tongued. Although he knew her words might not be sincere, she sure knew how to coax people.

Luke downed his glass of red wine, "I suggest telling them.

We are a team, and to find the treasure island quickly, we need their assistance."

Lilith raised her right hand in salute and playfully said, "Yes, sir.

I'll do as you say."

Soon, Lilith brought Glasses Girl and Elsa Marin together, and the four of them studied the second treasure map.

The second map depicted the treasure island's detailed geography; the eastern side was a steep cliff, the highest point on the island.

A small stream trickled down from the cliff, forming a small lake on the southern side of the island.

The northern side of the island had tall tropical rainforest.

The western side was a red mangrove forest, also the lower area of the island.

Red mangrove forests don't refer to a specific plant but a community dominated by red mangrove plants. They have a significant protective effect on the environment, can purify water, and serve as habitats for sea birds, shrimps, crabs, and shellfish.

Red mangrove forests can also weaken the power of tsunamis, fend off raging waves, and mitigate ocean disasters.

Additionally, red mangrove forests can stabilize sand, prevent soil erosion, and fortify the water-soil near coastlines.

Without the presence of red mangrove forests, persistent wave erosion would reduce the island's size gradually.

This might be one reason Luke speculated as causing the island's shape change.

Then, the group carefully studied the treasure map, speculating on possible changes to the island over five hundred years and identifying several consistent features, such as the cliff on the east, the towering tropical trees, and a possible small lake on the south.

Next, they reviewed the aerial view taken by drones today, and after some comparison, they found an island very similar to the treasure map.

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