I've made some some changes to a variety of tiles and also made a few new ones, including.

•  New volcano theme objects.
  • Volcano
  • Volcano dungeon entrance
  • Stalagmites
  • Hardened lava ground
• New Winter themed tileset
  • 2 types of snow covered trees
  • Snow piles
  • Snow covered ground
  • Ice Stalagmites
• Revisions
  • Adjusted the willow tree texture.
  • Adjusted the gray tree, the branches should be more readable and less noisy
    
  • Hollow log passageways
  • New stone columns and a variation.
  • Additional path tiles
  • New castle tiles and a crenellated variant for the roof.