It is part of the Research Lab, just north (above) the main lunar base. You will find the Locator Device there.
Drive there in the rover, pull away the meteor with the winch, and use the pressure chamber to squash you so you can slip past the boxes to the Infirmary door. Inside, grab the medi-hose and go straight up and left to the center hub, then back down and right to the maintenance area.
There is no electric saw on Lunar Colony. To enter the Infirmary at the Research Lab, climb to the top and use the pressure chamber to temporarily squash you down, then quickly slip past the boxes that are blocking the door. The exit from the Infirmary is in the maintenance area.
There are two: - the BioDome is the second place you travel to in the rover. - the circular Infirmary is part of the Research Lab, the first place you go.
To enter the Infirmary, you make yourself short by using the pressure device. To leave the Infirmary, there is a waste chute to the left in the maintenance area (where you find the locator device).
She is hiding, trying to learn more about the alien artifacts before being forced to return to Earth. Drive to the Research station and you can recover the locator device that is tracking her. It is in the Infirmary.
Lunar Colony
To enter the blocked Infirmary, use the pressure chamber device (upper center) to temporarily squash yourself down, and you can fit under the door. (You will not be exiting that way.)
There are no guards at all on Lunar Colony. PASE doesn't have any money in the budget.
It is on the back of the lunar rover. To use it, click it and carry the hook to where you need it.
Lunar Colony became the 29th island released in Poptropica (not counting mini-quests) on September 6, 2012.
You turn them purple.
It is attached to the back of the lunar rover. To use it, click it and carry the hook to where you need it.
It is in the Research Lab north of the main moon base. Drive there, move the meteor with your winch, and enter. The pressure chamber is at the upper left of the main room. You can squash yourself flat (temporarily) to squeeze past the blocks into the Infirmary.