"Search and Rescue 2" by Ruinae Retroque Rursus, a custom level for Manic Miners. Original version posted 11 May 2020, updated 19 July 2020.
Objectives: Find the lost miner and lost rescue party
Size: 56x56
Search and Rescue 2
Are you ready for some more action? One of our Miners has become lost while exploring distant caverns at the end of an underground river, and we need you to find him! Take care and don't get lost, Rock Raider - we don't want to have to send a rescue mission after you too!
Oh, one more thing: scanners detect a lot of Recharge Seams in the area. See if you can find them all.
(A light-hearted script-heavy map that utilizes a lot of cool tricks that are now possible in MM)
[updated version]
Almost nothing changed from the original, just uses the new script format MM likes to use and tells you how many secrets you've found as you go. Finding all the secrets also hands you a largely useless win for no discernible reason other than it's fun!