Then we cleared off snow from a larger area to sleep in. By the time we’d done that, we needed more firewood. So we spent at least a half hour chopping enough wood to last through the night.

I felt woolly, like I’d been awake for three days straight. My eyelids drooped, and I had to force myself to concentrate as I chopped wood lest the hatchet miss and add to our growing inventory of injuries.

But Darla looked even worse. Her eyes made a pair of black holes in her face. She was yawning almost nonstop.

“Go to sleep,” I said. “I’ll take first watch.”

“We can both sleep if we build up the fire first.”

“What if Black Lake finds us? We’d better take turns.”

Darla used a couple of small logs and one of her scarves to make a crude pillow, and then she lay down beside the fire. Within seconds her breathing slowed as sleep claimed her.

I wanted nothing more than to curl up around her and sleep, too. But I knew it wasn’t safe. I sat in the volcanic ash beside Darla and watched her chest slowly rise and fall. The firelight played in her hair. I reached out to stroke it but thought better of it and pulled my hand away—I didn’t want to wake her.

I felt suddenly morose. What was I doing, dragging Darla back into Iowa? Her parents were dead—she had no particular reason to want to find mine. Already she’d been injured. If I got Darla killed on this insane trip, I wouldn’t be able to live with myself.

Chapter 23

I struggled to stay alert, trudging back and forth beside the fire. When I saw the first hint of dawn in the east, I shook Darla awake. “I gotta sleep,” I said. She mumbled something and pushed herself upright. I was fast asleep before my head fully settled on the log.

It seemed like no time at all had passed when Darla pushed on my shoulder, saying, “Alex, wake up.”

I startled fully awake, sat up, and looked around. “Something wrong?”

“No, everything’s okay. But we should get going.”

“What time is it?”

“I don’t know. Around noon, maybe.”

Darla was dressed in her own clothes, and my coveralls were laid out on the tripod by the fire. I slipped my toasty warm coveralls on, struggling to pull the legs over my boots.

Darla fiddled with a bundle of wood. “What’s that?” I asked.

“I worked on the fire-by-friction set while you were asleep. Made a new thunderhead out of oak, so it won’t burn through. We’ve got two extra spindles now, too. Here’s your shoelace.”

I started relacing my boot while Darla tied all the fire-by-friction stuff into a neat bundle using a drawstring she’d cannibalized from her jacket. We kicked snow over the fire, tore down the tripod, and set out.

“Which way?” I asked.

“Maybe follow this creek upstream? Easier to walk on the ice. Hopefully we’ll hit a road.”

“How far is it to Worthington?”

“I don’t know, exactly. We’re near Bellevue. It’s about thirty miles from Worthington to Dubuque, but I think Bellevue is farther. Maybe forty or forty-five miles?”

“That’s going to take forever if we have to walk through deep snow. And I’m already famished.”

“Let’s see what the roads are like. If they’re bad, maybe I can improvise some snowshoes.”

We’d walked along the creek until we reached a railroad trestle that passed about twenty feet above the ice. Beyond that, I saw the concrete pylons and steel girders of a highway bridge.

We walked under the railroad trestle and turned to fight our way up the bank between the two bridges. The bank wasn’t steep, but the snow was so deep that it was difficult to force our way upward. For every step we managed, we slid back a half step.

Finally we got to the top, only to confront an enormous berm of plowed snow alongside the road. I led the way up the berm, thrusting my hands into the snow to make tenuous grips and kicking footholds into the side of the pile. The snow here was a filthy blend of volcanic ash and ice plowed off the road.

We hid near the top of the berm, watching the road for more than an hour. Nothing moved. There was no sound but the chattering of our teeth. I was worried about patrols, but it would take too long to get to Worthington traveling cross-country.

I got down the far side of the berm to the road by sliding on my butt. We were on a two-lane plowed highway.

“You think all the roads are this good?” I said.

“I hope so.” Darla stood and dusted the snow off herself. “We’ll make good time on this. Maybe get to Worthington in two, two-and-a-half days. Before we starve, anyway.”

“I guess there is one advantage to FEMA being in Iowa now.” Last year none of the roads on this side of the river had been plowed.

“That’s the only good those ass-puppets do.”

“Yeah.” I looked up and down the highway. “Which way?”

“Right. North. Worthington is northwest of us somewhere.”

“Won’t that take us closer to the lock and Black Lake?”

“Yeah. We’ll turn west as soon as we can.”

We made great time on the packed snow of the road. We didn’t talk—I was listening for engine noises and continually glancing behind us. I hoped there wouldn’t be any Black Lake trucks, but if any trucks did come, I wanted time to try to get away, although that might be impossible—the piles of snow and ash alongside the road were so high that we were essentially trapped.

We got off the highway onto a back road at the first opportunity. Darla led us through a dizzying succession of turns, heading north and west, she said. The roads were all deserted, which was a relief but also a bit puzzling. Why bother plowing roads nobody was going to use?

We passed six or seven farmsteads. All of them were clearly abandoned. About half the houses had burned. “Why do you think so many houses are burned?” I asked.

“Probably people took shelter in them and lit fires in places they shouldn’t have,” she replied. “You build a wood fire in a hearth that’s only designed for a gas log, you’ll burn the house down quick-like.”

As twilight set in, we stopped at a farmstead. It consisted of two cylindrical concrete grain silos and a one-story farmhouse. There were three hillocks of snow that might have been collapsed barns or sheds—I couldn’t tell. The front door and door trim of the farmhouse were missing—a drift of snow more than two feet deep graced the entryway. It was too dark inside to see much, but what I could see wasn’t pretty. The house had been thoroughly looted—furniture, doors, door trim, baseboards, and cabinets were all missing, probably burned as firewood. The mantle around the living room fireplace was gone, leaving an ugly hole in the wall, but there was a tiled area around the fireplace where we could safely build a fire. A big sooty stain proved we weren’t the first people to build a fire there, although there were no other signs of past occupants.

Darla started setting up the fire-by-friction set while I looked for wood. Everything burnable inside the house was gone. There were a bunch of trees outside, but all the lower limbs and smaller trees had been cut. I picked out the smallest of the remaining trees and started the long process of felling it with my hatchet—a job that really required a chainsaw or at least a full-size ax.

It was almost an hour later and fully dark by the time I returned to the living room with an armload of wood. I could barely make out Darla’s form hunched over a tiny, glowing spark.

“This is so cool—this black dust the set makes will keep a spark alive, like forever. We’ve got to find some way to store this stuff.”

“Sorry I took so long. Had to cut a tree down to get at the branches.”

“It’s okay. Make me a bird’s nest, would you?”

It was so dark, I could barely see anything. I stripped the bark from a couple of branches, working by feel. I took off my gloves to make it easier to shred the bark, and soon my hands were freezing. Darla stayed hunched over her spark, feeding it with black powder from the fire-by-friction set and fanning it gently with her knife blade.