Which agency requires two entrances for Intro/Basic Cave? I know that NACD used to limit me to single tank 1/3rds, but it seems that now diving doubles to 1/6th, mainline only, no stages are the main limitations.
Well, I am only assuming the OP trained through TDI (according to their profile). According to TDI standards,
"18.6 Course Structure and Duration Water Execution 1. Minimum of 4 single guideline cave dives with a total bottom time of 100 minutes conducted at 2 different sites."
Claiming the Ear and Eye are two different sites is a bit of a stretch in my opinion.