This viewing point looks down the runway to the West. From here you can watch planes taking off and landing and, since you are looking out to the West, it should be a good spot for viewing sunsets (unfortunately this can mean the sun might hamper your view of planes in the later half of the day). There iareplenty of designated parking spaces and it is a busy little place with families and plane spotters driving in and out regularly. If you want to be sure of seeing a plane taking off/landing during your visit check out the arrivals/departures on the Shannon airport website.
The cache is a small cannister with room for some small swap items.
Congratulations to Ballymul on being FTF!