Regarding the Mists of Zanaga expansion.
The villages allow you to make a market step and then use your remaining movement dice and then have an adventure step. However since market step is supposed to take place after both movement and adventure steps it brings up a few questions.
If on my turn I complete a ritual that summons the lost city to me can I then take a market step since that happens after the adventure step?
Often the lost city will be on a space that has an adventure jewel. This question regards if I begin on my turn on a space that has both the lost city and an adventure jewel con it. Can I roll movement dice, but stay on the space and take an adventure with the jewel. Then take a market step in the lost city, and under the wording of the market step in a native village says "After Heroes complete a Market step in a native village, they may continue their Movement step with any of their remaining movement dice that have not yet been spent. After Heroes finish moving, they proceed to their Adventure step following the normal rules.", so could I then move and have another adventure?
You can argue that the movement step has already passed but villages have special rules and you must follow them, otherwise you wouldn't be able to take a market step before moving and before adventure step anyway.
It happens often in Mists of Zanaga that the Lost City is placed on a space with an adventure jewel on it. It would have been better if this was avoided as in Sands of Al-Kalim, where the Lost Cities appeared only on spaces without jewels and other towns. However, I think you're reading the rules for the Native Village beyond what's written.
After Heroes complete a Market step in a native
village, they may continue their Movement step
with any of their remaining movement dice that have not yet
been spent. After Heroes finish moving, they proceed to their
Adventure step following the normal rules.
Heroes may only take one Market step during their turn. If a
Hero has already taken a Market step and then enters another
town during his continued Movement step, he must proceed
directly to the Experience step.
This text doesn't allow you to take a Market Step after the Adventure Step, or to move after the Adventure Step. You may argue that in this particular situation you end Movement on a space with both a jewel and a town, but if your movement has "ended" the Movement Step has ended. This is tricky, but the important thing to understand is the triggering condition of Step 3: Adventure Step and Step 4: Market Step according to the basic Rules: end of Movement Step (= no further movement allowed)
Native Villages break the rules allowing the Hero to move, take a Market Step, continue movement and, if able, take an Adventure Step. Any situation that gets out of this flow is not allowed. They put a clear sentence to negate double Market Steps, but this Lost City combo escaped. Designers thought that in no case an Adventure Step could be taken ending Movement on a Native Village.
In your example, your Hero does:
Step 1: Refresh
Step 2: Movement (dice are rolled but not used)
Step 3: Adventure
Step 4: Market, which is allowed not because the Lost City has the Native Village trait, but because in this very strange situation you ended movement in a Town Space which had a jewel as well.
Your Movement Step has ended when you chose to take an Adventure step... you can't continue movement because it has ended.
I usually play that when the Lost City appears, it goes over the Adventure jewel and the space is turned into a proper Town space, in order to avoid any possible arguments or loopholes. But I think it's right to consider the Native Village like a Town that allows to resume the Movement Step after taking a Market Step and nothing more. It doesn't change the order of other Steps, most notably the Adventure Step.