The Expedition is a place where you can gather a team of skilled settlers and send it in search of treasures and adventures.
There are 3 levels of expeditions; each new level grants the access to a journey that takes more time, requires more skills from the participants and additional resources to set off. However, the longer the journey, the more valuable the reward brought from it would be. Rewards can include coins, crystals, various items (including the special ones) and resources.
You can send out an expedition once a day; any additional expeditions on that day can be purchased with crystals. Crystals can also be used to return your team of travelers instantly with a reward.