I have modified my GigaPan EPIC to handle my larger DSLRs with up to 24 megapixel individual photos that can produce 360 degree panoramas of over 20 gigapixels.
Zoom into and explore using your scroll wheel or touch using the sample below. Images range in size from .1 to 12 gigapixels! See over 100 of my panoramas on the GigaPan.org web site. You get the same view as below but can take it full screen. Use the search box with terms "mrpiv" and add a second search term like "Sedona," "San Diego," "Hawai'i,"or "Bristol."
Below that are samples of two panoramas but hosted on my personal site. This viewer works a bit different from GigaPan.org but the same panning and zooming are possible. Click on the photo to be taken to these panos.
Navajo Nation, AZ - Canyon de Chelly National Monument - Spider Rock
Spider Rock Overlook on the rim road of Canyon de Chelly provides an excellent vantage point. Central to this view is the 800 foot tall home of the Spider Woman, the teacher of weaving and the enforcer of obedience in children. 5.02 GigaPixels, (119,020 x 42,184) Made from 741, 17.9 MegaPixel camera images (39 rows x 19 rows). Canon T2i with 72-300mm telephoto set to 300mm (472mm equivalent)
Sedona, AZ - Airport Saddle 360
The most spectacular vista in Sedona is on a small butte alongside Airport Road off AZ-89A. From there you can see south to Bell Rock and north to he Coffee Pot, and much of the west and south side residential and commercial areas. Oak Creek passes close to the road on the east-facing portion of the pano. Getting to this flat rock perch requires a scramble over some steep rocky ground, but the reward is this unmatched view and great backdrops for those "I was there, jumping in the air" selfies. 2.578 GigaPixels, (188960 x 13644). Made from 240, 17.9 MegaPixel camera images (48 columns x 5 rows). Canon T2i with 28-135mm telephoto set to 135mm (212.3mm equivalent)