In cenotes we make a distinction between cave and cavern. Limits of a Cenote Cavern Dive : you are at a maximum distance of 67meters / 140feet from any exit (open water) you can always see the light from entrances. there are no restriction area : there is alway room for 2 people side by side.
1 In the non-canon music video for Derezzed, there is an arcade machine called Derezzed in place of the TRON arcade machine. 2  The Derezzed machine is labelled as being made by ENCOM, just as the TRON machine is labelled as such in TRON: Legacy.
The Penny arcade came to life about 1898 and has been known under names such as Edisonias, Automatic Vaudevilles, Automatic Dreamlands, One-Eyed-Circus and 1cent Exhibits, until it finally settled down to the name of Penny Arcade which simply describes what it actually is- A penny walk though..