Timmis' shop (26) is actually directly above the shrine (33). This was the best way I felt I could represent this.
The Monlon temple is visible on the right. The catacombs are a separate map.
Lake Monlon's shoreline more or less follows the northwest edge of the light green.
The blue lake squares can be accessed from Sejanus' shop (43); he rents rowboats. Any square can be fished from except for the 80x80 or larger squares on the south -- these, for some reason, are impossible. To row a rowboat, you first must get the oars, and then row in a direction.
The Rockslide | Battlefields | Mines
The Monlon Catacombs