Disclosure: I am the author, cartographer, and publisher.
The post offering this item, and giving the requirements for receiving it, appeared on 14 January 2016. Included in the post was this text:
Here’s the cool part: I am going to start writing the adventure in June. SO…up to an including 1 June 2016, you may also include in your comments something you would like me to include in said adventure, and I will try to include it. Remember, this is a free project, so don’t be surprised if you don’t end up with 17 patrons just because of the comments. Keep it reasonable…but be inventive.
For a discussion of mathoms, see this listing.
Nobody suggested anything they would like to see included in the comments, so I did a conversion of Temple of the Golden Ape. The original material first appeared in Dragon Roots Magazine, issue #1. At that time, the material was written for 3rd Edition Dungeons & Dragons. All material was reworked for Dungeon Crawl Classics.
Stephen "Snake" Newton provided a short mini-review of this mathom here.
This product is no longer available, although, as indicated above, the 3rd Edition version can still be purchased from the publisher.