Mawei to Daqikong and scenic Maolan view

Hello,
I’m interest in visiting Libo in my solo china backpacking this November, planning to start from Guiyang and take the morning train to Mawei, have time for one night there. If possible I want to visit Daqikong and Maolan Karst Nature Reserve (could skip Xiaoqikong). Been reading this site and need help for more info:

1. Are there any direct transportation to the Daqikong river tracking entrance from Mawei and to/from Libo? (most site only says direct bus to Xiaoqikong. Can’t find any map how these two areas connect).

2.Found some scenic photos of Maolan, a view of cluster cone karsts with a road in middle, like it was taken from a watching tower (?) at the top of a hill. Any information about this spot? Possible to reach the hike starting point with public transportation? How long to hike to the top? If I start from Mawei/Libo what transportation should I take, where to stop and where to go?

3.If the next day I’m planning to return to Guiyang to catch a night train to Kunming, when is the last bus to Guiyang from Libo?
Thank you for the help.