Grottos Day Use Area
The Grottos Day Use Area consists of three main sections:
Goal Post Area
The Goal Post Area is located just past the turn off for the Grottos Day Use Area, below the south-side of Hwy 82. It has two main boulders with good, flat landings. In the summer the mosquitos can be pretty bad (for Aspen) so bring some bug juice.
Directions
Park at the Grottos Day Use Area on the right side of Hwy 82 (appx. 8.9 miles from Aspen). Take the trail heading left before the bridge, after crossing the stream, head left along an intermittent trail back towards the road. The Lesoterica Boulder is about 200 yards in. Alternatively you can hike up Hwy 82 about 100 yards and then drop down below the road and approach The Goal Post Boulder from behind.
Lesoterica Boulder
1. Leftsoteric [V1] Start matched on the positive edge/rail and climb the left side of the boulder.
2. Lesoterica [V5] 
SDS below the blunt arete. Climb up and throw to the top from an akward left hand that looks better than it feels.
3. Rightsoteric [V2] Start the same as Lesoterica and climb along the right angling sloping seam.
4. Terracle [V1] Climb the right leaning flake.
Goal Post and Merotica Boulders
5. The Uprights [V4] Climbs the slab left of #6.
6. Hash Mark [V0] Climb obvious sloping edges just left of the right-facing crack/dihedral.
7. Yardage [V0] Climb right of the crack.
8. The Ref [V0] Climb the arete and finish right.
9. Laces Out [V3] Climb the face just left of the large crack, starting on some left facing edges at 5ft.
10. Goal Line [V1] Climb the crack.
11. The Goal Post [V4] Climbs the black face in between the crack and the arete. Start low on rounded edges and climb straight up through more positive holds. The holds in the crack on the right and the jugs on the arete are off route.
12. Punt [V0] Climb The Goal Post using any holds.
13. Turf Toe [V2] Climbs the arete to a somewhat dirty topout.
14. Slot Seat [V4] SDS on sloped holds and climb straight up.
15. Merotica [V2] SDS on a sloping rail and pull over onto the slab.
Treeline Area
The Treeline Area is located on the far west side of the talus slope which also contains the World of Hurt boulders. It is an large area in the woods above (across the road from) the Grottos Day Use parking area. There is a good concentration of moderates and most of the problems have nice, flat landings. There is also good potential for new lines to be established.
Directions:
Park at the Grottos Day Use Area on the right side of Hwy 82 (appx. 8.9 miles from Aspen). The trail starts on the opposite (north) side of the highway at the brown forest service sign. Follow the trail along the pond and then uphill (the trail cuts left about 100ft after turning up hill - stay left), you will see a large boulder on the hillside uphill and right of the main trail with a faint trail leading up to it. Follow this faint trail up past the boulder and you will come to a flat plateau at the Main Treeline boulder.
The Setting Sun Area is located in the far right section of the Treeline Area plateau approximately 100yds right of the Big Nose Boulder. The boulders are situated on a large slab with mostly flat landings.
Setting Sun Boulder
1. [V0] Various low variations on big holds.
2. [V1] Start low on the arete and climb the left side of the short overhanging face.
3. Setting Sun [V4] Start matched on the wedge shaped pinch and head up to a flat jug, then pull over the lip and use an intermittent left leaning crimp rail on the slab to top out.
4. [V1] Start on obvious good holds at head height and go straight up, utilizing the arete to a somewhat lichen filled topout. Several variations for harder low starts exist.
Moonrise Boulders
Located just behind the Setting Sun Boulder are a pair of boulders with some potential problems.
The Big Nose Boulder is located 50 yards east of the Treeline Main Boulder and 100 yards west of the Setting Sun Area. The boulder has one tall, overhanging face with a good landing, and a shorter, steep face with a rocky landing.
Big Nose Boulder
1. The Big Deal [V5] Start low with your left hand on a small undercling/sidepull and your right on a good sidepull. Head straight up using the underclings, face crimps, and left hand sidepull to gain the loaf hold and the top. The large sidepulls of Shallow Hal are off route.
2. Shallow Hal [V4] Start as for The Big Deal but head right using the large sidepulls to rock on to the slab and top out.
3. Big Nose [V6] Start low on opposing crimps and move out the roof to the "big nose" and top out.
4. Nose Job [V7] Start as for Big Nose but move right to the crimp rail and top out right on good holds, avoiding the "big nose" feature.
The Treeline Main Area is centered around the Treeline Main Boulder which is the first boulder on the plateau at the top of the trail. The Roof Boulder is located just behind the Treeline Main at the edge of the talus on. The Beckoning Boulder and Treeline Boudler are located in the edge of the talus just behind the large slab at the base of Walden.
Treeline Main Boulder
1. Sap Arete [V3] Start low and use the left arete and crimps to gain the top.
2. Pine Arete [V4] SDS on good hold. Fun moves take you through the obvious rail and to the top.
3. Chucky Returns [V7] Start low in the "pit" and head up the face using the left arete.
4. Chucky [V6] Starts just right of Chucky Returns on good holds and heads up the face with a big right hand move.
5. Left Pine [V4] Start low on ok edges and head up to exit in the V shaped slab dihedral at the top. Bad landing.
6. Right Pine [V2] Start low on good crimps and move up to a pair of good jugs, then move up and right to a mantel topout.
7. Toothy [V0] The jagged, wide, juggy crack. This is also a convenient downclimb.
8. The Fin [V0] Start on big holds at the 5ft level and head straight up. A SDS on the low slopers makes it V1.
9. NE Arete [V1] SDS on the arete and move to topout directly or as for The Fin. Watch out for the large hollow hold at the 5ft level.
10. Treeline Crack [V0] Climb the dual crack/flake system to an easy topout.
11. Into the Woods [V3] Start low below the small bulge and head up to gain a large sloping edge, a sidepull, a crimp, and then the top. Great moves and spicy!
12. Walden [V5] Start hugging the blunt arete with your left hand on a good sidepull and your right on a square sloper. Delicate moves bring you through crimps to a vertical slot and then the top. Be aware of the slab on the right.
Beckoning Boulder, Treeline Boulder, and Roof Boulder
The Sloper Boulder is located 50 yards west of the Treeline Main Boulder on the right side of the main trail. The Hip Hop Boulder is just up hill of the sloper boulder and is capped by a large roof. On the other side of this capping boulder is the Trip Hop Boulder.
Sloper Boulder
1. Pokey [V0] Start on huge sidepulls and move up through a slopey topout.
2. Scar Face [V3] Start on the sidepulls above the small boulder and pull hard moves up the face.
3. Font Simulator [V4] Start on juggy feature under the mini-roof, climb through underclings to grab the "font" like sloper and climb the sloped rail left to top out.
4. Derek's Arete [V3] Start low on the arete on underclings and climb somewhat akwardly over the lip and topout straight up.
5. Under Dog [V5] Start on the crescent shaped hold at the 4ft level and traverse right on edges to top using a basketball textured sloper.
6. George's Pinch [V3] Start on slopey crimps, use the bad sloper to move up and left to topout as for Under Dog.
Hip Hop and Trip Hop Boulders
7. Hip Hop [V3] Start with a good left hand and a bad right hand, step on and hop to the top. Step off right.
8. Trip Hop [V5] SDS with the left hand on the good rail and the right on one of the crimps at the lip. Make a big move up and left and then make your way to the top via crimps and a left facing sidepull.
Mirror Pond Area
The Mirror Pond Area is located uphill from the Treeline Area at the base of the Designer Wall. The area sits adjacent to a talus slope and enjoys good rock, decent landings, and quality problems.
Directions
Park at the Grottos Day Use Area on the right side of Hwy 82 (appx. 8.9 miles from Aspen). The trail starts on the opposite (north) side of the highway at the brown forest service sign. Follow the trail along the pond and then uphill (the trail cuts left about 100ft after turning up hill - stay left), follow the trail through the woods to the base of the talus slope which leads to the Designer and Game walls. Continue up the talus on the right side, following cairns to a point where the trail forks. Take the fork which heads left back into the trees, this will lead you to the base of the Stung Boulder with Mirror Pond Face just behind.
The Stung Boulder is the first boulder reached on the trail, it features an overhanging face with positive holds. Facing the Stung Boulder is an overhanging project, the slab above this problem is the base of Mirror Pond Face.
Mirror Pond Face
1. Mirror Arete [V0] Climbs the arete on the far left of the face.
2. No U-Turn [V4] Just right of the arete is a classic crimpy line up the less than vertical face.
3. PROJECT [V?] The crimpy face to the right of No U-Turn.
4. Mirror Pond [V4] Climbs the subtle dihedral in the middle of the face.
5. Deschutes [V5] Start as for Mirror Pond but move right and up on crimps.
6. American Crack [V0] Climbs the offwidth crack above the terraced slab.
Stung Boulder
Infinite Seam Boulder
1. Finite Sloper [V3] Climbs the left arete on slopers.
2. Infinite Seam [V6] Start with a left crimp and a right hand undercling and climb up the right seam. The further left you start, the harder it gets.
3. PROJECT [V?] Starts on a horizontal crack under the roof and moves through the featured black face. Watch out for the boulder at your back.
Obsidian, V for Victory, Project Wall
4. Obsidian [V7] Starts low on the prominent rail and moves left. Bust a big move to a sloping sidepull and then another big move to the top.
5. V for Victory [V??] Starts low at the base of a “V” shaped overhang with the left hand on a small edge and the right pinching the arete. Milk the arete and edges to gain the horizontal seam above the lip and top out.
6. PROJECT Around the left side of the giant block is an beautiful overhanging face with horrific landings. Climb left to right along the obvious rail and top out above #7. Bring as many pads and spotters as you can.
7. PROJECT Starts 10ft right of #6 and goes straight up above the block at the base. Bad, bad landing