My 2 girls live Outside, they have a large upstairs hutch part with a ramp down to a large run. They aren't very keen on the ramp - though I have only had them a week so theyre still settling in. I saw in some pictures on here that people had fixed tunnels onto their ramps, which I'm thinking will be better for them - but I wasn't sure what sort of tunnel it should be, or how to fix it securely to the ramp? If anyone can give me an tips or alternative ideas that would be great.