Located in a canyon near the Helemano Military Housing area, bouldering at "Bug Park" was discovered in the spring of 2001 by local climber John Parkinson.  The wall lies on the valley floor, and has some excellent, and as yet only partially explored bouldering.  So far, the wall has shown high quality routes, ranging from moderate to difficult.

Most routes have grassy landings, but are quite high ball, so bring a crash pad and spotters.  Unlike Waimea, the rock at Bug Park is fairly kind on the tips.  The best season for climbing Helemano is probably the summer, or during the drier months.  Mosquitos are not unbearable, but can be annoying, so we recommend bringing along insect repellent.

The approach is short, about 10-15 minutes, but getting there can be tricky for first-timers.  First, take the Helemano Military Reservation (HMR) entrance road from Kamehameha Highway (it's a left turn at the stoplight if you're South-bound, or right for North-bound).  Drive East toward the Ko'olau Mountains and the HMR Installation. (by the way, be sure to reset the trip odometer at the stoplight)  Look for a yellow painted gate approximately 0.8 miles up the road, on the South side of the road - you will need to return to this point to begin hiking.  Find a place to park further up the road in a suitable location, taking care not block any gates or dirt
roads.

Return by foot to the yellow gate at the .8 mile mark, and begin hiking North through some tall grass and attempt to locate a very eroded bike trail heading downward into a very deep canyon.  Locating the descent into the canyon should take only about 4 minutes of walking at the most from the point of the yellow gate.  Head down the single-track trail which turns into an unruly and eroded gully, until you get to the bottom of the deep canyon.  Follow a fairly distinct trail DOWNSTREAM for no more than about 10-12 minutes (at a brisk walking pace).  You will cross the (likely dry) stream once - just as the trail is about to cross the stream for the 2nd time, veer off the trail to move toward the base of the canyon on the north side of the stream.  Look for the bouldering area on the North side of the canyon (on your right) after about another 300 feet or so after veering off the trail.  Be sure to look closely and often as the rock is partially obscured by trees.  The bouldering here has a nice, flat landing with grass, but most routes are highball, so don't forget a crashpad.