Mt Hood Meadows 50th Anniversary Logo

50th number blue ski resort

The resort's green, blue, and yellow mark normally sits in a crest-style shape to the left of the word mark. To transition to the anniversary design, the resort simply placed that mark inside the 0 of the number 50 similarly to the left of the word mark. This made their logo both unique to the celebration but also easy to recognize by their audience.

Source:
https://www.slopefillers.com/ski-resort-anniversary-logos/