This is a fragile alpine bouldering area and following Leave No Trace principles is important. Never stash pads. Do not alter landings, chip or glue holds, or remove or alter vegetation. Walk on hard surfaces such as boulders or established trails. Store your gear on boulders instead of dirt or vegetation. Clean up spilled chalk and tick marks and brush holds. Keep your presence low key and unobtrusive. Pack out everything you brought and anything else that shouldn't have been left there. RMNP rangers are very aware of the impact that bouldering has on this environment.
This information is a public crowdsourcing effort between the Access Fund,
and Mountain Project. You should confirm closures, restrictions, and/or related dates.
KB boulder is a choice piece of rock with a few gently overhanging crimpy problems on solid rock from V2 to V8. It's only a 10 minute approach but it's enough to get you away from the road with awesome views of Long's Peak. Some of the problems are slightly highball but a few pads and spotters should suffice with the relatively flat landing area.
Another boulder is about 10 minutes away, the Hollowell Park boulder, which is described in CO Bouldering Vol 1.
This area is described in Benningfield/Samet's CO Bouldering Vol 2 guide but the approach description is was incorrect. The directions below should be foolproof and get you to the boulder in 10 minutes.
Enter RMNP through the main Beaver Meadows Entrance and take your first left onto Bear Lake Road. Follow the road for about 3 miles until you reach the parking lot for Hollowell Park (it's after Moraine Park but before Glacier Basin). Park at the west end of the lot near the bathrooms. Take the MILL CREEK BASIN TRAIL WEST for about 5 minutes and you will arrive at a horse-trail junction. Take the RIGHT fork. Walk up this trail for 3 minutes and the KB boulder is the first large boulder you see on the left (north) side of the trail uphill in the trees. The boulder is about 50 yards off the trail.
Note: you will NOT need to take a shuttle bus to get to Hollowell Park.
We're talking about the same boulder but I think we're approaching it from different directions, perhaps. Just goes to show how verbal directions/descriptions can be so confusing while a topo/map could speak a thousand words.